Question
What is esterificatlon? how Is an ester obtained from alcohol or phenol?
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Answer
(1) When an alcohol or phenol is heated with a carboxylic acid in the presence of conc.sulphuric acid an ester is obtained. The reaction is called esterification. This is reversible reaction and the formation of an ester is favoured using excess of alcohol in the presence of conc. $H _2 SO _4$.
(2) Alcohols and phenols react with acid anhydrides in presence of acid catalyst to form eser.
(3) The reaction of alcohol and phenols with acid chloride is carried out in the presence of pyridine (base), which neutralizes HCl.
(2) Alcohols and phenols react with acid anhydrides in presence of acid catalyst to form eser.
(3) The reaction of alcohol and phenols with acid chloride is carried out in the presence of pyridine (base), which neutralizes HCl.
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