Methylene Analogs of Cyclobutenedione. VII. Photolysis of 2,3-Bis-(diphenylmethylene)cyclobutanone and Its Derivatives
作者:Fumio Toda、Hisao Nakaoka、Kentaro Yuwane、Eishiro Todo
DOI:10.1246/bcsj.46.1737
日期:1973.6
Photolysis of 2,2-dimethoxy-3,4-bis(diphenylmethylene)cyclobutanone (I), 2,3-bis(diphenylmethylene)cyclobutanone (XIV), and 3,4-bis(diphenylmethylene)cyclobutanedione (XXV) in methanol was investigated. Photolysis of I afforded tricyclic compound(II) and dimethyl cyclobutanedicarboxylate (III) in 48 and 35% yields, respectively. Photolysis of XIV and XXV afforded the dihydronaphthalene derivatives
2,2-二甲氧基-3,4-双(二苯基亚甲基)环丁酮(I)、2,3-双(二苯基亚甲基)环丁酮(XIV)和3,4-双(二苯基亚甲基)环丁二酮(XXV)在甲醇中的光解是调查。I 的光解得到三环化合物 (II) 和环丁烷二甲酸二甲酯 (III),产率分别为 48% 和 35%。XIV 和 XXV 的光解分别提供二氢萘衍生物 (XIX)(88% 产率)和 XXIV(72% 产率)。还研究了这些反应的机理。