作者:Antonio Palumbo Piccionello、Andrea Pace、Silvestre Buscemi
DOI:10.1021/ol201676g
日期:2011.9.2
A reaction of 3-chloro-1,2,4-oxadiazoles with allylamine and diallylamine has been investigated. 3,3a,4,5-Tetrahydroisoxazolo[3,4-d]pyrimidines are produced through a tandem ANRORC/[3 + 2]cycloaddition pathway consisting of the addition of allylamine to the 1,2,4-oxadiazole, followed by ring opening, nitrone formation, and finally cycloaddition. 3-N-Allylamino-1,2,4-oxadiazoles were also obtained as
已经研究了3-氯-1,2,4-恶二唑与烯丙胺和二烯丙基胺的反应。3,3a,4,5-四氢异恶唑并[3,4- d ]嘧啶是通过串联的ANRORC / [3 + 2]环加成途径生成的,该途径包括将烯丙胺添加到1,2,4-恶二唑中,然后环化打开,形成硝酮,最后进行环加成反应。3 - N-烯丙基氨基-1,2,4-恶二唑也可以通过经典的SNAr作为次要产物获得。相反,与二烯丙基胺的反应通过串联SNAr /叠氮化和亲核开环产生3 - N,N-二烯丙基氨基-1,2,4-恶二唑和咪唑啉。