申请人:Bayer Aktiengesellschaft
公开号:US03962270A1
公开(公告)日:1976-06-08
2-VINYL OXAZOLINES HAVING THE FORMULA ##EQU1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents hydrogen, or an optionally substituted alkyl or aryl radical, are prepared by reacting cyclobutane-1,2-dinitrile with an aminoethanol having the formula: ##EQU2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined at a temperature of from 90.degree. to 180.degree.C and, in a second stage, heating the resulting 1,2-bis-oxazolin-2-yl cyclobutane having the formula: ##EQU3## and/or 2-oxazolin-2-yl cyclobutane nitrile having the formula: ##EQU4## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are defined above, to a temperature of from 250.degree. to 600.degree.C.
具有以下式子的2-乙烯基噁唑啉的制备方法:##EQU1## 其中R1、R2、R3和R4,可以相同也可以不同,分别代表氢,或者是可选的取代基的烷基或芳基基团,通过将环丁烷-1,2-二腈与具有以下式子的氨乙醇反应制备而成:##EQU2## 其中R1、R2、R3和R4如上所定义,在温度为90℃至180℃之间,并且在第二阶段,将所得的具有以下式子的1,2-双噁唑啉基环丁烷:##EQU3## 和/或具有以下式子的2-噁唑啉基环丁烷腈:##EQU4## 其中R1、R2、R3和R4如上所定义,加热至250℃至600℃之间。