A practical three-step procedure for the preparation of 2-methyl-1-cyclopentene-1-carboxylic acid is detailed. This process relies on the reaction of commercially available 2-carboethoxycyclopentanone with nitromethane in the presence of equimolecular amounts of piperidine, followed by denitration of the derived allylic nitro compound by treatment with 5% Pd/C in the presence of ammonium formate and final hydrolysis of the ester moiety
An efficient preparation of 2-methyl-1-cyclopentene-1-carboxylic acid, a versatile synthetic building block
BENETTI, Simonetta;DE RISI, Carmela;FERRONI, Francesco;POLLINI, Gian Piero
2007
Abstract
A practical three-step procedure for the preparation of 2-methyl-1-cyclopentene-1-carboxylic acid is detailed. This process relies on the reaction of commercially available 2-carboethoxycyclopentanone with nitromethane in the presence of equimolecular amounts of piperidine, followed by denitration of the derived allylic nitro compound by treatment with 5% Pd/C in the presence of ammonium formate and final hydrolysis of the ester moietyFile in questo prodotto:
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