Photo-Induced Radical Cyclization of Aromatic Halides with Sodium Borohydride

Qiang Liu; Bing Han; Wei Zhang; Li Yang; Zhong-Li Liu; Wei Yu

doi:10.1055/s-2005-872243

LETTER

Photo-Induced Radical Cyclization of Aromatic Halides with Sodium Borohydride

Qiang Liu, Bing Han, Wei Zhang, Li Yang, Zhong-Li Liu*, Wei Yu*
National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
Fax: +86(931)8625657; e-Mail: yuwei@lzu.edu.cn;

Abstract

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Abstract

Direct UV irradiation of ortho-allyloxy- and ortho-but-3-enyloxy-iodo- and bromo-benzenes in the presence of NaBH₄ or NaBH₃CN gave radical cyclization products in high yield.

Key words

radical cyclization - photolysis - halobenzenes - sodium borohydride

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