Process for the preparation of polyene ethers

摘要

Polyene aldehydes are made by reaction of a carbonyl compound of formula: <IMAGE> (I) in which R denotes a hydrocarbon radical and R' denotes hydrogen or alkyl, with a metal derivative of a halogen compound of formula: <IMAGE> (II) in which X denotes halogen (preferably bromine), R3 is alkyl, and either R1 denotes hydrogen and R2 denotes an alkoxy radical indentical with OR3 or R1 and R2 together form a bond, followed by hydrolysis of the product obtained.