申请人:Bayer Aktiengesellschaft
公开号:US04440947A1
公开(公告)日:1984-04-03
Substituted .alpha.-halogenopropionic acids and their derivatives of the general formula ##STR1## wherein R.sup.1 to R.sup.3, Y and X have the meanings given in the description, are prepared by a process which is characterized in that substituted vinylidene chlorides of the general formula ##STR2## are reacted with chlorine or bromine chloride in the presence of compounds of the formula R.sup.5 --SO.sub.3 R.sup.6 (III) wherein R.sup.5 and R.sup.6 have the meaning given in the description, and the products obtained are treated, if appropriate, with water or alcohol. Certain of the substituted .alpha.-halogeno-propionic acids and the substituted vinylidene chloride of the formula ##STR3## are new. The end products are useful as herbicides and intermediates for insecticides.
通用公式##STR1##中的取代.alpha.-卤代丙酸及其衍生物,其中R.sup.1至R.sup.3,Y和X的含义如描述中所示,通过以下过程制备,该过程的特征在于,在化合物R.sup.5-SO.sub.3R.sup.6(III)的存在下,取代乙烯基氯化物的一般公式##STR2##与氯或溴氯在存在下反应,其中R.sup.5和R.sup.6的含义如描述中所示,并且如有必要,所得产品经水或醇处理。某些取代.alpha.-卤代丙酸和一般公式##STR3##的取代乙烯基氯化物是新的。最终产品可用作除草剂和杀虫剂的中间体。