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