Patent ID: 6489522
Filing Date: 2002-12-03
Classification: C07B,C07C

Abstract:
A process for producing optically active 3,7-dimethyl-6-octenol represented by formula (1): containing from 2 to 10% by weight optically active 3,7-dimethyl-7-octenol represented by formula (2): which comprises subjecting a mixture of an alkylamine and isoprene in a molar ratio of from 1:4 to 1:4.5 to telomerization at a reaction temperature of from 80 to 100Â° C. for from 2.5 to 3.5 hours in the presence of an alkyllithium catalyst and/or phenyllithium catalyst to thereby obtain a cis-3,7-dimethyl-2,6-octadienylamine compound represented by general formula (3): wherein R1 and R2 each represents a hydrogen atom or an alkyl, aralkyl, or aryl group having 1 to 10 carbon atoms, containing from 2 to 10% by weight cis-3,7-dimethyl-2,7-octadienylamine compound represented by general formula (4): wherein R1 and R2 each represents a hydrogen atom or an alkyl, aralkyl, or aryl group having 1 to 10 carbon atoms, asymmetrically isomerizing the resultant reaction product mixture, subsequently hydrolyzing the mixture to obtain a citronellal mixture, and then reducing the citronellal mixture.