One-step preparation of some 2-isopropenyl-2,3-dihydronaphtho-[2,3-<i>b</i>]furan-4,9-diones
作者:Seiji Yamaguchi、Toshiharu Katsuki、Hajime Yokoyama、Yoshiro Hirai
DOI:10.1002/jhet.5570380235
日期:2001.3
Some 2-isopropenyl-2,3-dihydronaphtho[2,3-b]furan-4,9-diones la-f,b',f were prepared by one-step cyclizations of 2-hydroxy-1,4-naphthoquinones 2a-f with 1,4-dibromo-2-methyl-2-butene (3).
通过2-羟基-1,4-萘醌2a的一步环化制备了一些2-异丙烯基-2,3-二氢萘[2,3- b ]呋喃-4,9-二酮la-f,b',f。-f与1,4-二溴-2-甲基-2-丁烯(3)。