A Convenient Procedure for Esterification of Thermally Unstable Carboxylic Acids

Abstract
There are many new methods for esterifying carboxylic acids but some have specific limitations such as harsh conditions, inconvenience of procedure, expense and inaccessibility of reagents1-6 we have prepared several novel bicyclic β–keto acids as intermediates for the synthesis of heterocyclic systems. Since these β–keto acids readily decarboxylate on heating, esterification by a simple low temperature procedure was necessary.