申请人:Societe Nationale des Poudres et Explosifs
公开号:US04772695A1
公开(公告)日:1988-09-20
A process for the preparation of vinyl carbamates of formula I ##STR1## is described which comprises heating an .alpha.-halogeno-carbamate of formula II ##STR2## in which X is a halogen atom at a temperature between 70.degree. and 250.degree. C. for a period of time between several minutes up to several hours. R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different. The process is applicable to a great variety of products in which R.sub.1, R.sub.2, R.sub.3, and R.sub.4 have different meanings. The process permits to prepare in a simple and economical fashion, vinyl carbamates, which have industrial value and novel vinyl carbamates.
描述了一种制备式I的乙烯氨基甲酸酯的方法,包括加热式II的α-卤代氨基甲酸酯,其中X是卤素原子,在70°C至250°C之间的温度下加热,时间为几分钟至几小时。R₁、R₂、R₃和R₄相同或不同。该方法适用于具有不同含义的R₁、R₂、R₃和R₄的各种产品。该方法可简单经济地制备具有工业价值和新型乙烯氨基甲酸酯。