2-Alkyl-4,4-diacyloxybut-2-enals of the formula ##STR1## where R.sup.1 is alkyl and R.sup.2 and R.sup.3 are each hydrogen or an aliphatic, cycloaliphatic or aromatic radical, are prepared by a process in which a 2-alkyl-1,4-diacyloxybuta-1,3-diene of the formula ##STR2## is reacted with oxygen or an oxygen donor, in the presence of a carboxylic acid of the formula R.sup.3 -COOH III.
公式为 ##STR1## 的2-烷基-4,4-二酰氧基丁-2-烯醛,其中R1为烷基,R2和R3各自为氢或脂肪族、环状脂肪族或芳香族基团,通过下列方法制备:在III式为R3-COOH的
羧酸存在下,将公式为 ##STR2## 的2-烷基-1,4-二酰氧基丁-1,3-二烯与
氧气或氧供体反应。