1-haloalkadiene and a process for preparing the same and a process for preparing (9e, 11z)-9,11-hexadecadienyl acetate

摘要

A process to prepare (9E,11Z)-9,11-hexadecadienyl acetate with a good yield and high purity of the general formula (1): CH₃—(CH₂)₃—CH═CH—CH═CH—(CH₂)_a—X.=The process includes a step of conducting a Wittig reaction between a haloalkenal of the general formula (2): OHC—CH═CH—(CH₂)_a—X, and a triarylphosphonium pentylide of the general formula (3): CH₃—(CH₂)₃—CH⁻—P⁺Ar₃, to obtain the 1-haloalkadiene, and the use of a (7E,9Z)-1-halo-7,9-tetradecadiene obtained by the process for a process of preparing (9E, 11Z)-9,11-hexadecadienyl acetate.