已经开发了一种无过渡金属的路线,用于从2-羟基萘醌串联一锅法合成萘醌呋喃衍生物。依次完成的方法包括在2-羟基萘醌的3位上的sp 2-碳的分子间炔基化与芳基乙炔基溴化物,然后进行碱促进的分子内亲核环化反应。广泛的官能团与该反应相容,并且可以以良好的产率和优异的区域选择性获得各种萘并[2,3 - b ]呋喃-4,9-二酮。
Photo-induced Reaction of 2-Alkoxy-3-bromo-1,4-naphthoquinones with Acetylenes: Formation of 2-Aryl-substituted Naphtho[2,3-<i>b</i>]furan-4,9-diones
作者:Tetsuo Otsuki
DOI:10.1246/bcsj.49.3713
日期:1976.12
2-Aryl-substituted naphtho[2,3-b]furan-4,9-diones 3 were obtained as a major product in the photo-chemical reaction of 2-alkoxy-3-bromo-1,4-naphthoquinones with acetylenes.