Synthesis of substituted cyclobutenediones from 3-ethenyl-4-methoxy-cyclobutene-1,2-dione
作者:Simon Xu、Benjamin R. Yerxa、Robert W. Sullivan、Harold W. Moore
DOI:10.1016/s0040-4039(00)92025-2
日期:1991.2
The synthesis of 3-ethenyl-4-methoxycyclobutene-1,2-dione from dimethyl-squarate is described. This compound was observed to undergo facile 1,6-addition of both carbon and non-carbon nucleophiles to the 3-alkenyl group. Thus, it serves as a versatile starting material for the synthesis of a variety of substituted cyclobutenediones which are convenient starting materials to a variety of other ring systems
描述了由二甲基二甲基酸酯合成3-乙烯基-4-甲氧基环丁烯-1,2-二酮。观察到该化合物容易地将碳和非碳亲核试剂两者都进行3-烯基的1,6-加成。因此,它用作合成多种取代的环丁二烯的通用起始原料,这些取代的环丁二酮是多种其他环系统的方便起始原料。