A Level Organic Chemistry: Reaction mechanisms - aromatic electrophilic acylation
Revising Advanced Organic Chemistry Doc Brown's GCE Chemistry
Revision Notes PART 10 Summary of organic reaction mechanisms - A mechanistic introduction to organic chemistry and explanations of different types of organic reactions
Part 10.8 Aromatic Hydrocarbons - Arenes - Electrophilic substitution reactions - ACYLATION
Part 10.8 AROMATIC HYDROCARBONS (ARENES) - introduction to arene electrophilic substitutions. Acylation to give aromatic ketones [Friedel-Crafts reaction]. The orientation of products in aromatic substitution (1,2-; 1,3-; and 1,4- positions for two substituents in the benzene ring, old names - ortho/meta/para substitution products). The revision notes include full diagrams and explanation of the mechanisms and the 'molecular' equation and reaction conditions and other con-current reaction pathways and products are also explained for the reaction mechanisms of aromatic hydrocarbons like benzene and methylbenzene.
Part 10.8 AROMATIC HYDROCARBONS (Arenes)
10.8.1 Introduction to the reactivity of aromatic compounds
e.g. the arenes benzene and methyl benzene
Why do aromatic hydrocarbon molecules primarily react via electrophilic substitution reaction?
10.8.5 The electrophilic substitution of an arene - acylation mechanism (Friedel-Crafts reaction)
Organic synthesis of aromatic ketones by reaction of acid/acyl chlorides with benzene/methylbenzene
mechanism 25 - electrophilic substitution by an acyl group in the benzene ring
10.8.7 The orientation of products in aromatic electrophilic substitution reactions
keywords phrases: reaction conditions formula intermediates organic chemistry reaction mechanisms electrophilic substitution benzene methylbenzene C6H6 + R'COCl ==> C6H5COR' + HCl If ethanoyl chloride, CH3COCl, was used (R=CH3-), benzene forms phenylethanone, C6H5-CO-CH3 RCO+ R = CH3, acylation of benzene methylbenzene : C6H5CH3 + R'COCl ==> R'COC6H4CH3 + HCl
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