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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.