What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.33.3.1Preparation of acyl chlorides• Recall preparation of acyl chlorides: (a) reaction of carboxylic acids with PCl ₃ and heat, PCl ₅ or SOCl ₂Syllabus objective33.3.2Reactions of acyl chlorides• Describe reactions of acyl chlorides:- (a) hydrolysis on addition of water at room temp. to produce the carboxylic acid and HCl- (b) reaction with an alcohol at room temp. to produce an ester and HCl- (c) reaction with phenol at room temp. to produce an ester and HCl- (d) reaction with ammonia at room temp. to produce an amide and HCl- (e) reaction with a primary or secondary amine at room temp. to produce an amide and HC lSyllabus objective33.3.3Mechanism: acyl chlorides in reactions• Describe the addition–elimination mechanism of acyl chlorides in reactions in 33.3.2(a)–(e)Syllabus objective33.3.4Hydrolysis reactivity: acyl vs alkyl chlorides• Explain the relative ease of hydrolysis of acyl chlorides, alkyl chlorides and halogenoarenes (aryl chlorides)Syllabus objective