Polyene aldehydes are made by reaction of a carbonyl compound of formula: ##STR1## in which R denotes a hydrocarbon radical and R' denotes hydrogen or alkyl, with a metal derivative of a halogen compound of formula: ##STR2## in which X denotes halogen (preferably bromine), R.sub.3 is alkyl, and either R.sub.1 denotes hydrogen and R.sub.2 denotes an alkoxy radical identical with OR.sub.3 or R.sub.1 and R.sub.2 together form a bond, followed by hydrolysis of the product obtained.
Polyene aldehydes是通过以下反应制得的:将式为:##STR1## 其中R表示烃基,R'表示氢或烷基的羰基化合物与式为:##STR2## 其中X表示卤素(优选
溴),R.sub.3是烷基,而R.sub.1表示氢,R.sub.2表示与OR.sub.3相同的烷氧基或R.sub.1和R.sub.2一起形成键的卤素化合物的
金属衍
生物发生反应,随后
水解所得产物。