申请人:BASF Aktiengesellschaft
公开号:US05639890A1
公开(公告)日:1997-06-17
N-Alkenylcarbamic esters of the general formula I ##STR1## where at least one of the R.sup.1 radicals is hydrogen and the second R.sup.1 radical is hydrogen or C.sub.1 -C.sub.4 --alkyl, the R.sup.2 radical is an aliphatic, cycloaliphatic, araliphatic or aromatic radical which can be linked to the R.sup.3 radical to form a 2- to 10-membered bridge, and the R.sup.3 radical is an aliphatic, cycloaliphatic or aromatic radical, from an alkenyl carboxylate of the general formula II ##STR2## where R.sup.1 has the abovementioned meaning, and R.sup.4 is hydrogen, an aliphatic, cycloaliphatic or aromatic radical, and a carbamic ester of the general formula III ##STR3## where the R.sup.2 and R.sup.3 radicals have the abovementioned meanings, are prepared by reacting the starting compounds in the presence of a base.
通式I的N-烯基氨基甲酸酯,其中至少一个R.sup.1基团是氢,第二个R.sup.1基团是氢或C.sub.1-C.sub.4-烷基,R.sup.2基团是脂肪、环脂、芳基或芳香基团,可与R.sup.3基团连接形成2-到10-成员的桥,R.sup.3基团是脂肪、环脂或芳香基团,从通式II的烯基羧酸酯制备,其中R.sup.1具有上述含义,R.sup.4是氢、脂肪、环脂或芳香基团,和通式III的氨基甲酸酯,其中R.sup.2和R.sup.3基团具有上述含义,通过在碱的存在下反应起始化合物制备。