Process for the preparation of vinyl carbamates
    1.
    发明授权
    Process for the preparation of vinyl carbamates 失效
    制备乙烯基氨基甲酸酯的方法

    公开(公告)号:US4772695A

    公开(公告)日:1988-09-20

    申请号:US533630

    申请日:1983-09-19

    摘要: 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.

    摘要翻译: 描述了制备式I的乙烯基氨基甲酸酯的方法(I),其包括在70℃的温度下加热其中X为卤素原子的式II的α-卤代 - 氨基甲酸酯 和250℃下进行数分钟至数小时之间的时间。 R1,R2,R3和R4相同或不同。 该方法适用于各种产品,其中R1,R2,R3和R4具有不同的含义。 该方法允许以简单和经济的方式制备具有工业价值的乙烯基氨基甲酸酯和新的乙烯基氨基甲酸乙烯酯。