Lipase catalysed kinetic resolution of racemic (±)2,2-dimethyl-3-(2-methyl-1-propenyl)-cyclopropane carboxyl esters+

Optically active (1R)(−) and (1S)(+)-trans-Chrysanthemic acid and its esters were prepared from corresponding racemic methyl ester by lipase mediated enantioselective hydrolysis, is described.