Tetrahedron letters

Electrocycloreversion of benzocyclobutenols promoted by photoinduced electron transfer

Y Takahashi, K Miyamoto, K Sakai, H Ikeda, T Miyashi…

Index: Takahashi, Yasutake; Miyamoto, Kazuya; Sakai, Kazuhiro; Ikeda, Hiroshi; Miyashi, Tsutomu; Ito, Yoshikatsu; Tabohashi, Ken Tetrahedron Letters, 1996 , vol. 37, # 31 p. 5547 - 5550

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Citation Number: 11

Abstract

Benzocyclobutenols 1 undergo electron-transfer induced electrocycloreversion to generate o-quinodimethane intermediates E-4 and Z-4, which then tautomerize to benzophenones 2. Evidence for the intermediates is provided by the trapping experiments and the laser flash photolysis experiments.

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