Polyene aldehydes of the general formula I ##STR1## where R is ##STR2## where R' is alkyl, aryl, aralkyl or cycloalkyl and, if desired, may be further substituted, and the radicals R" are each C.sub.1 -C.sub.4 -alkyl or together form --CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --CH.sub.2 -- bridges which, if desired, may be further substituted by C.sub.1 -C.sub.4 -alkyl, are prepared by catalytic oxidation of the corresponding polyene alcohol with oxygen or an oxygen-containing gas by a process wherein the oxidation is carried out in the presence of the catalyst system comprising 2,2,6,6-tetramethylpiperidine 1-oxide or 4-oxo-2,2,6,6-tetramethylpiperidine 1-oxide and copper(I) chloride.
                            通式为I的多烯醛化合物 ##STR1## 其中R为 ##STR2## 其中R'为烷基、芳基、芳基烷基或环烷基,如有需要,可以进一步取代,而基团R"分别为C.sub.1-C.sub.4-烷基或共同形成--CH.sub.2--CH.sub.2--或--CH.sub.2--CH.sub.2--CH.sub.2--桥,如有需要,可以进一步用C.sub.1-C.sub.4-烷基取代,通过将相应的多烯醇与
氧气或含
氧气体在催化剂
2,2,6,6-四甲基哌啶1-氧化物或4-氧代-
2,2,6,6-四甲基哌啶1-氧化物和
氯化
铜(I)的存在下催化氧化而制备得到。