The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

Provided is a method for industrially producing a conjugated Z-alken-yn-yl acetate such as Z-13-hexadecen-11-yn-yl acetate which is a sex pheromone component of a pine processionary moth, and an intermediate for the conjugated Z-alken-yn-yl acetate under mild conditions at a high yield. More specifically, provided is a method for producing a conjugated Z-alken-yn-yl acetate (5) comprising the steps of: reacting an -halo-2-alkynal (1) with an alkylidene triphenylphosphorane (3) through a Wittig reaction to obtain a conjugated Z-alken-yn-yl halide (4), and acetoxylating the conjugated Z-alken-yn-yl halide (4) into a conjugated Z-alken-yn-yl acetate (5). ##STR00001##

Provided is a method for industrially producing a conjugated Z-alken-yn-yl acetate such as Z-13-hexadecen-11-yn-yl acetate which is a sex pheromone component of a pine processionary moth, and an intermediate for the conjugated Z-alken-yn-yl acetate under mild conditions at a high yield. More specifically, provided is a method for producing a conjugated Z-alken-yn-yl acetate (5) comprising the steps of: reacting an -halo-2-alkynal (1) with an alkylidene triphenylphosphorane (3) through a Wittig reaction to obtain a conjugated Z-alken-yn-yl halide (4), and acetoxylating the conjugated Z-alken-yn-yl halide (4) into a conjugated Z-alken-yn-yl acetate (5). ##STR00001##