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。