申请人:BASF Aktiengesellschaft
公开号:US05710331A1
公开(公告)日:1998-01-20
Preparation of N-alkenyl carboxamides of the general formula I ##STR1## in which the radicals R.sup.1 to R.sup.4 independently stand for hydrogen or for aliphatic, cycloaliphatic, or aromatic radicals, which optionally carry inert substituents, wherein an amide of the general formula II ##STR2## in which the radical R.sup.1 has the above meaning, and a carbonyl compound of the general formula III ##STR3## in which the radicals R.sup.2 to R.sup.4 have the above meanings, are caused to react in the presence of a base, said reaction being either a) carried out in the presence of a carboxylic acid derivative of the general formula IV ##STR4## in which the radical R.sup.5 stands for hydrogen or an alkyl or aryl group and X is a halogen, alkoxy, or carboxylalkyl radical, or b) continued in the presence of a carboxylic acid derivative of the formula IV, and the amide of the formula I is isolated.
通式I的N-烯基羧酰胺的制备##STR1##其中基团R.sup.1至R.sup.4独立地代表氢或脂肪族、环脂族或芳香族基团,该基团可能携带惰性取代基,其中通式II的酰胺##STR2##其中基团R.sup.1具有上述含义,并且通式III的羰基化合物##STR3##其中基团R.sup.2至R.sup.4具有上述含义,在碱存在下发生反应,所述反应要么a)在存在通式IV的羧酸衍生物的情况下进行##STR4##其中基团R.sup.5代表氢或烷基或芳基,X是卤素、烷氧基或羧基烷基基团,要么b)在存在通式IV的羧酸衍生物的情况下继续,并且分离出通式I的酰胺。