Process for preparing olefinic aldehydes

摘要

A process for the preparation of olefinic aldehydes and intermediates is disclosed. The condensation of an alpha , omega -dihalide with a metal acetylide gives an acetylenic halide which can be reduced to give an olefinic halide, then oxidized to give the desired olefinic aldehyde or the acetylenic halide can be oxidized first to give an acetylenic aldehyde and then reduced to give the desired olefinic aldehyde.