Expedient synthesis of quadrilure antipodes, the pheromone of square-necked grain beetle
作者:A.S Pawar、S Chattopadhyay
DOI:10.1016/0957-4166(95)00031-j
日期:1995.2
title pheromone, (E)-3-methyl-7-acetoxynon-3-ene (I) have been synthesized in high enantiomeric excess via a stereoselective route. Thus, easily accessible, 3-methylpent-1-en-3-ol (2) was converted via a Claisen orthoester rearrangement to the ester (3) with exclusive (E)-geometry. Its derivatization to the aldehyde (5) followed by reaction with ethylmagnesium bromide gave the racemic pheromone alcohol