Photoinduced Cyclization of 2-Acetonyl-3-alkoxy-1,4-naphthoquinones: Formation of 2-Alkyl-Substituted 4-Methylnaphtho[2,3-<i>d</i>]-1,3-dioxepin-6,11-diones
作者:Katsuhiko Nakagawa
DOI:10.1246/bcsj.64.2852
日期:1991.9
Irradiation of 2-acetonyl-3-alkoxy-1,4-naphthoquinones in benzene gave 2-alkyl-substituted 4-methylnaphtho[2,3-d]-1,3-dioxepin-6,11-dione and 2-acetonyl-3-hydroxy-1,4-naphthoquinone via intramolecular hydrogen-abstraction reaction. Irradiation of quinones in methanol, however, gave the latter product exclusively.
在苯中辐照 2-丙酮基-3-烷氧基-1,4-萘醌,通过分子内的氢萃取反应生成 2-烷基取代的 4-甲基萘并[2,3-d]-1,3-二氧杂环庚烷-6,11-二酮和 2-丙酮基-3-羟基-1,4-萘醌。然而,在甲醇中辐照醌类化合物只能得到后一种产物。