Question

Decarboxylation of cyclic carboxylic acid mechanism

Answer 1

Decarboxylation of the silver salts of carboxylic acids in the presence of bromine or chlorine, the Hunsdiecker reaction, often is useful for the synthesis of alkyl halides: ... There is some competing decarboxylation of the ethanoic acid, but the conversions in this kind of reaction are usually good.

Answer 2

Esters or carboxylic acids with a carbonyl group at the 3- (or b-) position readily undergo thermal decarboxylation. ... The reactive species is the carboxylic acid or the carboxylate anion.