A process is described for the preparation of substituted oxyacetaldehydes and acetals thereof according to the reaction sequence: ##STR1## wherein R.sub.1 and R.sub.2 are each lower alkyl or R.sub.1 and R.sub.2, taken together form a lower alkylene group; wherein R.sub.3 is alkyl, alkenyl or alkadienyl and X is halogen selected from the group consisting of chlorine and bromine, the reaction (i) being carried out (1) using a "phase transfer agent" and (2) in a two phase system.
本发明涉及一种制备取代氧代
乙醛及其
缩醛的方法,其反应序列如下:##STR1## 其中R.sub.1和R.sub.2分别是较低的烷基或R.sub.1和R.sub.2共同形成较低的烷基烯基烷基;其中R.sub.3是烷基、烯基或烷二烯基,X是从
氯和
溴组成的卤素,反应(i)在两相系统中进行,使用“相转移剂”进行。