Imaging Science and Photochemistry ›› 1998, Vol. 16 ›› Issue (1): 48-54.DOI: 10.7517/j.issn.1674-0475.1998.01.48

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STUDY ON PHOTOINDUCED ELECTRON TRANSFER REACTION OF CHLORANIL AND 3βMETHOXYCHOLEST5EN

YANG Chenggen1, WU Shuping2, JIANG Zhiqin2   

  1. 1. Faculty of Organic Chemistry, Agric.Coll., Yangzhou University, Yangzhou 225009, P. R. China;
    2. Research Lab.of Photochemistry, Department of Chemistry, Tongji University, Shanghai 200092, P. R. China
  • Received:1997-06-16 Revised:1997-09-08 Online:1998-02-20 Published:1998-02-20

Abstract: The photochemical reaction of chloranil(Q) with 3β-methoxycholest-5-en(1) in MeCN gave three major products: the coupling products between the benzoquinone and 3β-methoxycholest-5-en-at-7 postion (2),3β-methoxycholest-5-en-7-ol(3),and the hydrobenzoquinone(QH2). The solvent effect on the reaction was also investigated. A photo induced electron transfer(ET) reaction mechanism was proposed to account for the reaction,the ESR,UV spectrometry etc. were employed to verify the ET path way.

Key words: chloranil, cholesterol, photochemical reaction