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Advanced A Level Organic Chemistry: Carboxylic acids and derivatives: Their naming and structure

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6.1 The molecular structure & nomenclature - naming of carboxylic acids and derivatives

Doc Brown's Chemistry Advanced Level Pre-University Chemistry Revision Study Notes for UK KS5 A/AS GCE IB advanced level organic chemistry students US K12 grade 11 grade 12 organic chemistry

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All my revision notes on the chemistry of carboxylic acids and derivatives

All my advanced A level organic chemistry revision notes

Index of GCSE level oil and basic organic chemistry notes

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Part 6 CARBOXYLIC ACIDS and DERIVATIVES

(c) doc b    (c) doc b    (c) doc b    (c) doc b   (c) doc b    (c) doc b

(c) doc b Carboxylic acid nomenclature - names & structures of aliphatic and aromatic carboxylic acids and derivatives and substituted derivatives of carboxylic acids - How do you name carboxylic acids? How to name acid chlorides (acyl chlorides)? How to name amides? How to name esters? How to name amino acids? how to name amides? How to name substituted carboxylic acids? Examples of displayed formula of carboxylic acids, esters, amides, acid chlorides, acid anhydrides, graphic formula, molecular formula, skeletal formula, structural formula, all of them named and nomenclature explained.

Organic Chemistry Part 6.1 sub-index for this page:

How to name Acids RCOOH .. Acyl chlorides RCOCl .. Amides RCONH2 .. Esters RCOOR'

.. Acid anhydride (RCO)2O .. Substituted RCOOH Acids .. acid nitriles RCN .. Amino acids

Further examples of:

(i) monocarboxylic acids and their derivatives

(ii) aliphatic saturated and unsaturated dicarboxylic acids

(iii) aromatic acids and their derivatives

Practice Question - can you name these more complex substituted carboxylic acids?

Abbreviations used: mpt = melting point;  bpt = boiling point; dec = thermally decomposes


This page covers aliphatic carboxylic acids IUPAC nomenclature acyl/acid chlorides IUPAC nomenclature acyl/acid amides IUPAC nomenclature esters IUPAC nomenclature carboxylic acid anhydride IUPAC nomenclature substituted carboxylic acids, mono carboxylic acids and their derivatives, aliphatic saturated dicarboxylic acids, unsaturated dicarboxylic acids, aromatic carboxylic acids and their derivatives


Introduction to naming aliphatic carboxylic acids and their derivatives

Carboxylic acids and their derivatives are based on the O=C(X)R group

where R = H, alkyl or aryl and X is also a variable e.g. OH, Cl, NH2 or OR' (R = alkyl or aryl)

OH is the hydroxyl/hydroxy group, and has the acidic hydrogen, the proton source on ionisation.

The C=O is called the carbonyl group, as in aldehydes and ketones, but the X grouping considerably modifies its behaviour with respect to aldehydes and ketones.

A monocarboxylic acid, only has one carboxylic acid grouping, usually at the end of the longest carbon chain.

Dicarboxylic/tricarboxylic acids with have 2/3 -COOH groups in the molecule.

A pictorial summary of five O=C(X)R types of molecule is given below with a section on how to name them individually.  Note: For RCOCl (X = Cl) there is no stable acid chloride HCOCl. Nitriles have quite a different structure.

 diagram structure of carboxylic acid functional group general structural formula advanced level organic chemistry diagram structure of acyl acid anhydride functional group general structural formula advanced level organic chemistry

diagram structure of acid chloride acyl chloride functional group general structural formula advanced level organic chemistry diagram structure of acid amide acyl amide functional group general structural formula advanced level organic chemistry

diagram structure of ester functional group general structural formula advanced level organic chemistry diagram structure of nitrile functional group general structural formula advanced level organic chemistry


(c) doc b 1. How do you name CARBOXYLIC ACIDS?

-COOH is the carboxyl (carboxylic acid) functional group of the homologous series of carboxylic acids.

The primary suffix name for a carboxylic acid is based on the "longest carbon chain name " plus the suffix "oic acid" for the COOH acidic bond system e.g. methanoic acid, ethanoic acid etc.

The prefix of the IUPAC name comes from the parent alkane without the end 'e', to which is added ...oic acid. The e is retained for dicarboxylic acids and prefixed to ...dioic acid.

Aromatic carboxylic acids are named from the parent aromatic hydrocarbon.

Note: Derivative types 2. to 5. are carboxylic acid derivatives where the OH group is replaced by another group.  1st example methanoic acid.

Aromatic acids have the same functional group, but directly attached to a benzene (aromatic) ring and are therefore named on the basis of being an 'aromatic' compound.

e.g. aliphatic carboxylic acid (c) doc b ethanoic acid,

aliphatic dicarboxylic acid, (c) doc b ethanedioic acid,

aromatic carboxylic acid (c) doc b 2-methylbenzoic acid, where the carboxylic acid functional group (O=C-OH) is directly attached to the benzene (aromatic) ring (see 6. for more examples of substituted carboxylic acids.

(c) doc b is an aromatic dicarboxylic acid


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(c) doc b 2. How do you name ACYL or ACID CHLORIDES?

-COCl is the functional group of the homologous series of acid/acyl chlorides.

The primary suffix name for an acid chloride or acyl chloride is based on the "longest carbon chain name" plus the suffix "oyl chloride" for the COCl bond system.

e.g. ethanoyl chloride, propanoyl chloride etc. (there is no stable methanoyl chloride). 1st example ethanoyl chloride 

The prefix of the IUPAC name comes from the parent alkane without the end 'e', to which is added ...oyl chloride]

Examples: aliphatic carboxylic acid chlorides (acyl chlorides) (c) doc b ethanoyl chloride,

and (c) doc b butanoyl chloride,

The aromatic acid chloride (c) doc b , benzoyl chloride, the acyl chloride group (O=C-Cl) is directly attached to the benzene ring.


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(c) doc b 3. How do you name ACYL or ACID AMIDES?

-CONH2 is the functional group of the homologous series of acid/acyl amides.

The primary suffix name for an acid amide is based on the "longest carbon chain name" plus the suffix "amide" for the CONH2 bond system e.g. methanamide, ethanamide etc. 1st example methanamide. 

The prefix of the IUPAC name comes from the parent alkane without the end 'e', to which is added ...amide e.g.

aliphatic acid amide (c) doc b butanamide and (c) doc b ethanamide

aromatic acid amide (c) doc b benzamide, the amide group (O=C-NH2) is directly attached to the benzene (aromatic) ring.


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(c) doc b 4. How do you name ESTERS?

-COOC is the functional group of the homologous series of carboxylic acid esters.

The prefix part of the name of an ester is derived from the alkyl (or aryl) part of the alcohol (or phenol).

The suffix part of the ester name is based on the carboxylic acid, but the "…oic acid" becomes "…oate" e.g. ethyl ethanoate, methyl ethanoate, pentyl butanoate etc.

In the diagrams above, the R group is derived from the carboxylic acid and the R' group from the alcohol or phenol. 1st example methyl methanoate.

The first part of an ester's name is derived from the alcohol/phenol e.g. methyl from methanol, ethyl from ethanol, propyl from propanol and phenyl from phenol etc.

The second part of the name comes from the carboxylic acid and ends in ...oate e.g. methanoate from methanoic acid, ethanoate from ethanoic acid, propanoate from propanoic acid and benzoate from benzoic acid etc.

Aliphatic esters e.g.  (c) doc b methyl propanoate (from methanoic acid and methanol),

and (c) doc b ethyl ethanoate (from ethanol and ethanoic acid),

A (totally) aromatic ester would be (c) doc b phenyl benzoate (from benzoic acid and phenol)


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(c) doc b 5. How do you name ACYL or ACID ANHYDRIDES?

The primary suffix name for an acid anhydride is the "longest carbon chain name" plus, as a separate word, the suffix "anhydride" for the (O=C)2O bond system e.g. ethanoic anhydride, propanoic anhydride etc.

Note:

(i) There is no stable methanoic anhydride

(ii) an acid anhydride is equal to two carboxylic acid molecules minus a water molecule

e.g. 2 RCOOH - H2O = (RCO)2O

1st example ethanoic anhydride. 

The prefix of the IUPAC name comes from the parent alkane without the end 'e', to which is added ...oic anhydride, so an aliphatic acid anhydride is e.g. (c) doc b ethanoic anhydride


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(c) doc b 6. How do you name SUBSTITUTED CARBOXYLIC ACIDS?

The possible positions of the substituent(s) in an aliphatic carboxylic acid are denoted by carbons 2,3,4 etc. with a prefix e.g. amino, hydroxy, halo… or alkyl… groups etc., and using the lowest possible numbers.

The 'lowest' numbers are determined by assigning number 1 to the carbon of the carboxylic acid (or other derived) group at the end of the longest C atom chain.

If there is more than one 'type' of substituent e.g. using the prefixes: amino..., bromo…, chloro…, hydroxy ..., methyl… etc., they are written out in alphabetical order irrespective of carbon atom number (note: di, tri are ignored in using this rule) e.g. 2-chloropropanoic acid CH3CHClCOOH. 1st example chloroethanoic acid

aliphatic mono-substituted aliphatic acids (c) doc b chloroethanoic acid (halogen substituent, no number needed)

(c) doc b 4-methylhexanoic acid   (alkyl group substituent, number needed)

(c) doc b aminoethanoic acid (amino group substituent, no number needed)

3-aminopropanoic acid ,(c) doc b  (amino group substituent, number needed)

 (c) doc b 3-hydroxybutanoic acid  (hydroxy group substituent, number needed)


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7. How do you name nitriles?

The nitrile functional group consists of a carbon to nitrogen triple bond -C≡N.

The name is based on the longest carbon chain, including the C of the nitrile group and in this case the 'e of the ane' is retained. In case you didn't notice, this e is absent in examples 1. to 6.

methanenitrile (methanonitrile, hydrogen cyanide), (c) doc b, (c) doc b, (c) doc b

Note the linear H-CN bond, bond angle 180o, a linear shaped molecule.

ethanenitrile (ethanonitrile, acetonitrile), C2H3N, (c) doc b , (c) doc b , (c) doc b , (c) doc b , (c) doc b, (c) doc b

propanenitrile (propanonitrile, ethyl cyanide), C3H5N, (c) doc b , (c) doc b , (c) doc b

skeletal formula versions for propanenitrile: (c) doc b, (c) doc b, (c) doc b

Note the linear C-CN bond, bond angle 180o, but all the other bond angles are ~109o i.e. C-C-C, C-C-H, H-C-C, H-C-C.

Examples of hydroxy substituted nitriles

2-hydroxypropanenitrile, CH3CH(OH)CN,

2-hydroxy-2-methylpropanenitrile 2-hydroxy-2-methylpropanenitrile structural formula doc brown's advanced A level organic chemistry revision notes

2-hydroxy-2-methylbutanenitrile,


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(i) Examples of mono carboxylic acids and their derivatives

Acid and derivatives in order of:

 1. methanoic, 2. ethanoic, 3. propanoic, 4. butanoic, 5. pentanoic, 6. hexanoic

and some 'old' names are quoted in (italics).

1a. methanoic Acid (formic acid), molecular formula CH2O2, structural formulae (c) doc b, (c) doc b

displayed formula (c) doc b , skeletal formula(c) doc b 

1b. methanamide (formamide), molecular formula CH3NO, structural formula (c) doc b , (c) doc b

displayed formula (c) doc b , skeletal formula (c) doc b

1c. methyl methanoate (methyl formate), C2H4O2, structural formula (c) doc b , (c) doc b

displayed formula (c) doc b , skeletal formula (c) doc b

1d. ethyl methanoate, molecular formula C3H6O2, structural formulae (c) doc b , (c) doc b 

displayed formula (c) doc b , skeletal formula (c) doc b

1e. propyl methanoate, molecular formula C4H8O2, abbreviated structural formulae (c) doc b

structured formula (c) doc b , skeletal formula (c) doc b

an isomer of this is HCOOCH(CH3)2  1-methylethyl methanoate derived from methanoic acid and propan-2-ol

1f.  butyl methanoate, HCOOCH2CH2CH2CH3


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2a. ethanoic acid C2H4O2, (acetic acid), (c) doc b , (c) doc b ,(c) doc b , (c) doc b

2b. ethanoyl chloride (acetyl chloride), (c) doc b,(c) doc b ,(c) doc b , (c) doc b

2c. ethanamide (acetamide), (c) doc b , (c) doc b , (c) doc b , (c) doc b  

2d. ethanoic anhydride (acetic anhydride), (c) doc b , (c) doc b , (c) doc b

2e. methyl ethanoate (methyl acetate), (c) doc b ,(c) doc b , (c) doc b, (c) doc b

2f. ethyl ethanoate (ethyl acetate), (c) doc b , (c) doc b ,(c) doc b , (c) doc b

2g. propyl ethanoate , (c) doc b , (c) doc b , (c) doc b

an isomer of this is CH3COOCH(CH3)2  1-methylethyl ethanoate derived from ethanoic acid and propan-2-ol

2h. phenyl ethanoate , CH3COOC6H5  , (c) doc b

2i. chloroethanoic acid (chloroacetic acid), (c) doc b , (c) doc b , (c) doc b  (2-chloroethanoic acid, but 2 not necessary)

2j. aminoethanoic acid (aminoacetic acid), (c) doc b, (c) doc b, (c) doc b  

(2-aminoethanoic acid, but 2 not necessary, this is the simplest 'amino acid' known as glycine in biochemistry)

2k. hydroxyethanoic acid (hydroxyacetic acid), HO-CH2-COOH, HOCH2COOH  (2-hydroxyethanoic acid, but 2 not necessary)


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3a. propanoic acid  (propionic acid), (c) doc b , (c) doc b , (c) doc b

3b. propanoyl chloride , (c) doc b, (c) doc b, (c) doc b

3c. propanamide (propionamide), (c) doc b, (c) doc b , (c) doc b

3d. propanoic anhydride , (c) doc b , (c) doc b , (c) doc b

3e. methyl propanoate (methyl propionate), (c) doc b , (c) doc b , (c) doc b 

3f. ethyl propanoate, (c) doc b, (c) doc b , (c) doc b

3g. propyl propanoate, (c) doc b , (c) doc b, (c) doc b

an isomer of this is CH3CH2COOCH(CH3)2  1-methylethyl propanoate derived from propanoic acid and propan-2-ol

3h. 2-chloropropanoic acid , (c) doc b, (c) doc b , (c) doc b

3i. 3-chloropropanoic acid , (c) doc b, (c) doc b , (c) doc b

3j. 2-aminopropanoic acid, (c) doc b , (c) doc b , (c) doc b

3k. 3-aminopropanoic acid,(c) doc b ,(c) doc b , (c) doc b

3l. 2-methylpropanoic acid (isobutyric acid), (c) doc b , (c) doc b , (c) doc b

and  methyl 2-methylpropanoate,  (CH3)2CHCOOCH3

3m. propenoic acid (acrylic acid), CH2=CH-COOH, an unsaturated mono carboxylic acid

3n. 2-hydroxypropanoic acid, CH3CH(OH)COOH, 2-hydroxypropanoic acid structural formula doc brown's advanced A level organic chemistry revision notes ,  skeletal formula of 2-hydroxypropanoic acid 2-hydroxypropionic acid

3o. 3-hydroxypropanoic acid, HO-CH2-CH2-COOH, HOCH2CH2COOH

3p. 2-hydroxypropanenitrile, CH3CH(OH)CN,

3q. 2-hydroxypropanoic acid 2-hydroxypropanoic acid structural formula doc brown's advanced A level organic chemistry revision notes and the corresponding carboxylate anion 2-hydroxypropanoate ion carboxylate anion structural formula doc brown's advanced A level organic chemistry revision notes 2-hydroxypropanoate ion

note the suffix naming of the carboxylate anion ...oate

3r. 2-hydroxy-2-methylpropane nitrile 2-hydroxy-2-methylpropanenitrile structural formula doc brown's advanced A level organic chemistry revision notes

3s. 2-hydroxy-2-methylpropanoic acid 2-hydroxy-2-methylpropanoic acid structural formula doc brown's advanced A level organic chemistry revision notes

and the corresponding carboxylate anion 2-hydroxy-2-methylpropanoate ion structural formula doc brown's advanced A level organic chemistry revision notes the 2-hydroxy-2-methylpropanoate ion

3t. 2,2-dimethylpropanoic acid (CH3)3CCOOH


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4a. butanoic acid (butyric acid), (c) doc b , (c) doc b , (c) doc b

4b. butanoyl chloride, (c) doc b , (c) doc b , (c) doc b

4c. butanamide, (c) doc b , (c) doc b , (c) doc b

4d. butanoic anhydride, (c) doc b , (c) doc b

4e. methyl butanoate (methyl butyrate), (c) doc b , (c) doc b , (c) doc b

4f. ethyl butanoate , (c) doc b , (c) doc b , (c) doc b

4g. propyl butanoate , (c) doc b , (c) doc b , (c) doc b

an isomer of this is CH3CH2CH2COOCH(CH3)2  1-methylethyl butanoate derived from butanoic acid and propan-2-ol

4h. butyl butanoate , (c) doc b, (c) doc b(c) doc b

4i. 2-methylbutanoic acid , (c) doc b , (c) doc b

4j. 3-methylbutanoic acid , (c) doc b , (c) doc b

4k. 2-hydroxybutanoic acid , (c) doc b , (c) doc b

4l. 3-hydroxybutanoic acid , (c) doc b , (c) doc b

4m. 4-hydroxybutanoic acid ,(c) doc b , (c) doc b

4n. 2-chlorobutanoic acid ,(c) doc b , (c) doc b

4o. 3-chlorobutanoic acid ,(c) doc b , (c) doc b

4p. 4-chlorobutanoic acid ,(c) doc b , (c) doc b

4q. 2-hydroxy-2-methylbutanenitrile,

4s. 2-hydroxy-2-methylbutanoic acid 2-hydroxy-2-methylbutanoic acid structural formula doc brown's advanced A level organic chemistry revision notes

and the corresponding carboxylate anion, 2-hydroxy-2-methylbutanoate ion structural formula doc brown's advanced A level organic chemistry revision notes 2-hydroxy-2-methylbutanoate ion


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5a. pentanoic acid , (c) doc b , (c) doc b , (c) doc b

5b. pentanoyl chloride , (c) doc b, (c) doc b , (c) doc b

5c. pentanamide , (c) doc b , (c) doc b , (c) doc b

5d. pentanoic anhydride , (c) doc b , (c) doc b

5e. methyl pentanoate , (c) doc b , (c) doc b , (c) doc b

5f. ethyl pentanoate , (c) doc b , (c) doc b , (c) doc b

5g. propyl pentanoate , (c) doc b , (c) doc b , (c) doc b

5h. butyl pentanoate , (c) doc b , (c) doc b

5i. 2-methylpentanoic acid , (c) doc b , (c) doc b

5j. 3-methylpentanoic acid , (c) doc b , (c) doc b

5k. 4-methylpentanoic acid , (c) doc b , (c) doc b

5l. 2-ethylpentanoic acid , (c) doc b , (c) doc b

5m. 3-ethylpentanoic acid , (c) doc b , (c) doc b 


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6a. hexanoic acid , (c) doc b , (c) doc b , (c) doc b

6b. 2-methylhexanoic acid ,  (c) doc b , (c) doc b

6c. 3-methylhexanoic acid ,  (c) doc b , (c) doc b

6d. 4-methylhexanoic acid , (c) doc b , (c) doc b

6e. 5-methylhexanoic acid , (c) doc b , (c) doc b

6f. 2-ethylhexanoic acid , (c) doc b , (c) doc b

6g. 3-ethylhexanoic acid ,  (c) doc b , (c) doc b

6h. 4-ethylhexanoic acid , (c) doc b , (c) doc b


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(ii)(a) Examples of aliphatic saturated dicarboxylic acids and a tricarboxylic acid

1. ethanedioic acid (oxalic acid), (c) doc b , (c) doc b , (c) doc b , (c) doc b

2. propanedioic acid (malonic acid), (c) doc b , (c) doc b , (c) doc b , (c) doc b

(sometimes 'more systematically called propane-1.4-dioic acid)

3. butanedioic acid (succinic acid), (c) doc b , (c) doc b , (c) doc b ,

(c) doc b  (sometimes 'more systematically called butane-1.4-dioic acid or 1,4-butanedioic acid)

4. 2-hydroxybutanedioic acid (malic acid), , this will exhibit R/S stereoisomerism (optical isomers)

5. 2,3-dihydroxybutanedioic acid (tartaric acid) , molecular structure 2,3-dihydroxybutanedioic acid structural formula of a dicarboxylic acid

this has two chiral carbons and forms three stereoisomers (see R/S isomerism for details).

6. citric acid is a tricarboxylic acid (and a tertiary alcohol too!)


(ii)(b) Example of an aliphatic unsaturated dicarboxylic acid

But-2-ene-1,4-dioic acid, HOOC-CH=CH-COOH, which has the geometric isomers

Z-but-2-ene-1,4-dioic acid, (maleic acid) (c) doc b  (cis)

and E-but-2-ene-1,4-dioic acid, (fumaric acid)(c) doc b (trans)

more details on E/Z isomerism of these acids


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(iii) Examples of aromatic acids and their derivatives

The -COOH is directly attached to the benzene ring

1. (c) doc b , (c) doc b , (c) doc b(c) doc b , benenecarboxylic acid, benzoic acid

  sodium benzoate  (the sodium salt of benzoic acid)

2. (c) doc b , (c) doc b , (c) doc b , (c) doc b , benzenecarbonyl chloride, benzoyl chloride

3. (c) doc b , (c) doc b , (c) doc b ,(c) doc b , benzenecarboxamide, benzamide,

4a. (c) doc b(c) doc b , (c) doc b , methyl benzenecarboxylate, methyl benzoate

4b. (c) doc b , (c) doc b , (c) doc b , ethyl benzenecarboxylate, ethyl benzoate

4c. (c) doc b , (c) doc b , (c) doc b , propyl benzenecarboxylate, propyl benzoate

4d.  C6H5COOC6H5 , (c) doc b ,  phenyl benzoate

5a. (c) doc b , 2-hydroxybenzenecarboxylic acid, 2-hydroxybenzoic acid (salicylic acid)

5b.(c) doc b  2-ethanoylhydroxybenzoic acid (acetylsalicylic acid, Aspirin)

5c. (c) doc b , 3-hydroxybenzenecarboxylic acid, 3-hydroxybenzoic acid

5d. (c) doc b , 4-hydroxybenzenecarboxylic acid, 4-hydroxybenzoic acid

5e. (c) doc b  ,  (c) doc b(c) doc b . 2-, 3- and 4-methylbenzoic acid

5f. 2-chlorobenzoic acid structural formula3-chlorobenzoic acid structural formula . 4-chlorobenzoic acid structural formula 2-, 3- and 4-chlorobenzoic acid  

5g. 2-nitrobenzoic acid structural formula advanced A level organic chemistry , 3-nitrobenzoic acid structural formula advanced A level organic chemistry4-nitrobenzoic acid structural formula advanced A level organic chemistry , 2-, 3- and 4-nitrobenzoic acid  

5h. 2-aminobenzoic acid structural formula advanced A level organic chemistry  , 3-aminobenzoic acid structural formula advanced A level organic chemistry , 4-aminobenzoic acid structural formula advanced A level organic chemistry  , 2-, 3- and 4-aminobenzoic acid  

6a. (c) doc b , benzene-1,2-dicarboxylic acid

6b. (c) doc b , benzene-1,3-dicarboxylic acid

6c. (c) doc b , benzene-1,4-dicarboxylic acid

 

Example of a condensation polymer from a dicarboxylic acid

Ethane-1,2-diol (ethylene glycol, glycol), C2H6O2, diols triols and cyclo-alcohols structure and naming (c) doc b , diols triols and cyclo-alcohols structure and naming (c) doc b , two primary alcohol groups

benzene-1,4-dicarboxylic acid forms a condensation polymer with ethane-1,2-diol, the polyester Terylene

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AMINO ACIDS and ZWITTERIONS

The primary suffix name for an aliphatic carboxylic acid is based on the "longest carbon chain name *" for the -COOH bond system e.g.  ethanoic acid, propanoic  acid etc. The amino group -NH2, with its C-atom position number, is added as a prefix. [* without the end 'e']

Many amino-acids in aqueous solution, or in the crystalline state, exist as 'zwitterions' where the proton migrates from the acidic carboxylic -COOH group to the basic -NH2 amino group to form the ionic groups -NH3+ and -COO BUT within the same 'molecule' - the two forms exist in equilibrium.

H2N-CHR-COOH (c) doc b +H3N-CHR-COO

Three examples are shown below as structural formula and skeletal formula for the molecule and zwitterion.

aminoethanoic acid, C2H5NO2, (c) doc b , (c) doc b , (c) doc b , (c) doc b , (c) doc b

2-aminopropanoic acid, C3H7NO2, (c) doc b , (c) doc b , (c) doc b , (c) doc b , (c) doc b

 3-aminopropanoic acid ,(c) doc b , (c) doc b , (c) doc b , (c) doc b 


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Question - can you name these more complex substituted carboxylic acids

question on naming substituted carboxylic acids advanced A level organic chemistry doc brown

ANSWERS


LINKS TO ASSOCIATED ADVANCED ORGANIC CHEMISTRY PAGES

Multiple choice quiz on naming carboxylic acids and derivatives

(c) doc bType in name (short answer) quiz on carboxylic acids and derivatives

All Advanced Organic Chemistry Notes

Summary of Organic Functional Groups Notes

Quiz on Organic Structure Recognition

Summary of organic chemistry functional group tests

Intermolecular forces & boiling points of carboxylic acids

The shapes and bond angles of simple organic molecules


keywords formulae: how to name naming nomenclature empirical molecular formula graphic formula displayed formula skeletal formula structural isomers isomerism Acid .. Chloride .. acid acyl Amide .. Ester .. acid Anhydride .. Substituted carboxylic Acids and (i) mono carboxylic acids and their derivatives (ii) aliphatic saturated/unsaturated dicarboxylic acids (iii) aromatic acids and their derivatives HCOOH HCONH2 HCOOCH3 HCOOCH2CH3 HCOOCH2CH2CH3 CH3COOH HOCH2COOH CH3COCl CH3CONH2 (CH3CO)2O CH3COOCH3 CH3COOCH2CH3 CH3COOCH2CH2CH3 CH3COOC6H5 ClCH2COOH H2NCH2COOH C2H5COOH CH3CH2COOH CH3CHOHCOOH CH3CH(OH)COOH HOCH2CH2COOH CH3CH2COCl CH3CH2CH2CONH2 (CH3CH2CO)2O CH3CH2COOCH3 CH3CH2COOCH2CH3 CH3CH2COOCH2CH2CH3 CH3CHClCOOH ClCH2CH2COOH H2NCH2CH2COOH CH3CH(NH2)COOH (CH3)2CHCOOH CH2=CHCOOH C3H7COOH CH3CH2CH2COOH CH3CH2CH2CH2COCl CH3CH2CH2CH2CONH2 CH3CH2CH2CH2COOCH3 CH3CH2CH2CH2COOCH2CH3 CH3CH2CH2CH2COOCH2CH2CH3 CH3CH2CH2CH2COOH CH3(CH2)3COOH CH3(CH2)4COOH HOOCCOOH (COOH)2 HOOCCH2COOH CH2(COOH)2 HOOC-CH=CH-COOH HOOCCH=CHCOOH C6H5COOH CH3C6H4COOH C6H5COCl C6H5CONH2 C6H5COOCH3 C6H5COOCH2CH3 C6H5COOCH2CH2CH3 HOC6H4COOH HCOOCH(CH3)2 CH3COOCH(CH3)2 CH3CH2COOCH(CH3)2 CH3CH2CH2COOCH(CH3)2 These detailed notes on the structure and naming of carboxylic acids include the general formula of carboxylic acids molecules, empirical formula of carboxylic acid molecules, structural formula of carboxylic acid molecules, skeletal formula of carboxylic acid molecules, displayed formula of carboxylic acid molecules, shapes of carboxylic acid molecules, isomers of carboxylic acids molecule These detailed notes on the structure and naming of esters include the general formula of ester molecules, empirical formula of ester molecules, structural formula of ester molecules, skeletal formula of ester molecules, displayed formula of ester molecules, shapes of ester molecules, isomers of esters molecules These detailed notes on the structure and naming of acid amides include the general formula of amide molecules, empirical formula of amide molecules, structural formula of amide molecules, skeletal formula of amide molecules, displayed formula of amide molecules, shapes of amide molecules, isomers of amides molecules These detailed notes on the structure and naming of acid/acyl chlorides include the general formula of acid/acyl chloride molecules, empirical formula of acid/acyl chloride molecules, structural formula of acid/acyl chloride molecules, skeletal formula of acid/acyl chloride molecules, displayed formula of acid/acyl chloride molecules, shapes of acid/acyl chloride molecules, isomers of acid/acyl chlorides molecules IUPAC rules for carboxylic acid nomenclature. Students should be able to draw structural formula of carboxylic acids, displayed and skeletal formulas for carboxylic acid organic compounds apply IUPAC rules for nomenclature to name carboxylic acid organic compounds including chains and rings and be able to apply IUPAC rules for nomenclature to draw the structural, displayed or skeletal structure of carboxylic acid organic compounds from the carboxylic acid IUPAC name IUPAC rules for ester nomenclature. Students should be able to draw structural formula of ester, displayed and skeletal formulas for ester organic compounds apply IUPAC rules for nomenclature to name ester acid organic compounds including chains and rings and be able to apply IUPAC rules for nomenclature to draw the structural, displayed or skeletal structure of ester organic compounds from the ester IUPAC name from the homologous series of esters IUPAC rules for amide nomenclature. Students should be able to draw structural formula of amide, displayed and skeletal formulas for amide organic compounds apply IUPAC rules for nomenclature to name amide acid organic compounds including chains and rings and be able to apply IUPAC rules for nomenclature to draw the structural, displayed or skeletal structure of amide organic compounds from the amide IUPAC name from the homologous series of amides IUPAC rules for acyl/acid chloride nomenclature. Students should be able to draw structural formula of acyl/acid chloride, displayed and skeletal formulas for acyl/acid chloride organic compounds apply IUPAC rules for nomenclature to name acyl/acid chloride acid organic compounds including chains and rings and be able to apply IUPAC rules for nomenclature to draw the structural, displayed or skeletal structure of acyl/acid chloride organic compounds from the acyl/acid chloride IUPAC name from the homologous series of acyl/acid chlorides IUPAC rules for substituted carboxylic acids nomenclature. Students should be able to draw structural formula of substituted carboxylic acids, displayed and skeletal formulas for substituted carboxylic acids organic compounds apply IUPAC rules for nomenclature to name substituted carboxylic acids acid organic compounds including chains and rings and be able to apply IUPAC rules for nomenclature to draw the structural, displayed or skeletal structure of substituted carboxylic acids organic compounds from the substituted carboxylic acids IUPAC name from the homologous series of substituted carboxylic acids

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ANSWERS to the Question on naming more complex substituted carboxylic acids

skeletal formula molecular structure of 3-methylpentanoic acid 4-bromo-2-ethylpentanoic acid 2,5-dimethylhexanoic acid 4-chloro-3-hydroxyheptanoic acid 6-bromo-2-hydroxy-4-phenyloctanoic acid

The skeletal formula showing the molecular structure of

(1) 3-methylpentanoic acid   (2) 4-bromo-2-ethylpentanoic acid   (3) 2,5-dimethylhexanoic acid

(4) 4-chloro-3-hydroxyheptanoic acid  and  (6) 6-bromo-2-hydroxy-4-phenyloctanoic acid

and watch out for numbering, the C of COOH is 1 and note the alphabetical order of substituents


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