Photochemische Umwandlungen. XXXIV [1]. Photochemische Isomerisierung substituierter Benzonorbornadiene
作者:W. Eberbach、P. Würsch、H. Prinzbach
DOI:10.1002/hlca.19700530543
日期:——
The benzonorbornadiene derivatives 4, 5, 6 and 19 give upon direct photoexcitation the benzo-tricyclo [3.2.0.02, 7] heptenes 14, 17, 21 and 23 in yields up to 60%. Sensitization by acetone improves the yields considerably. The spectral data of the substrates 4, 5, 6, 7 and 19, of the photoproducts 14, 17, 21 and 23, as well as of the dihydrobenzonorbornadienes 13, 16 and 22, are presented.
的苯并降冰片二烯衍生物4,5,6和19在直接光激发得到苯并三环[3.2.0.0 2,7 ]庚烯14,17,21和23中的产率高达60%。丙酮敏化可大大提高产率。基板的频谱数据4,5,6,7和19,所述光产物的14,17,21和23,以及的dihydrobenzonorbornadienes 13,16和22,现介绍。