SYNTHESIS OF O-QUINODIMETHANES AND BENZOCYCLOBUTENES FROM DIMETHYL SQUARATE

被引：23

作者：

EZCURRA, JE

MOORE, HW

机构：

[1] Department of Chemistry University of California, Irvine

来源：

TETRAHEDRON LETTERS | 1993年 / 34卷 / 39期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1016/S0040-4039(00)73703-8

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Selected 3-alkylidene(and benzylidene)-4-allenylcyclobutenes were shown to undergo an unusual thermal ring expansion to o-quinodimethanes and thus to benzocyclobutenes upon electrocyclic ring closure. The mechanism of this rearrangement is envisaged to involve ring opening of the starting cyclobutenes to the corresponding octa-1,2,4,6,7-pentaenes which lead to the quinodimethanes upon ring closure.

引用

页码：6177 / 6180

页数：4