Tetrahedron letters

Photoinduced reactions of 3β-acetoxycholesta-5, 7-diene, 3β-acetoxycholest-5-ene, tetraphenylcyclopentadiene and 1, 1-diphenylethylene with oxygen in the …

RK Haynes, AE Hilliker

Index: Haynes, Richard K.; Hilliker, Audrey E. Tetrahedron Letters, 1986 , vol. 27, # 4 p. 509 - 512

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Citation Number: 7

Abstract

Abstract Whereas PhSeBr under irradiation with O 2 in CH 2 Cl 2 at− 78 acts as a photoxygenation catalyst to convert 3 β-acetoxycholesta-5, 7-diene and tetraphenylcyclopentadiene into the corresponding endoperoxides, and 3β-acetoxycholest- 5-ene into 3β-acetoxycholest-5-en-7-one and the corresponding alcohols, it reacts with 1, 1- diphenylethylene to give mainly a bromohydrin; bromine radicals arising by ...