Phenanthrene Synthesis by Eosin Y??Catalyzed, Visible Light??Induced [4+ 2] Benzannulation of Biaryldiazonium Salts with Alkynes

T Xiao, X Dong, Y Tang, L Zhou

文献索引：Xiao, Tiebo; Dong, Xichang; Tang, Yanchi; Zhou, Lei Advanced Synthesis and Catalysis, 2012 , vol. 354, # 17 p. 3195 - 3199

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被引用次数: 64

摘要

Abstract A metal-free, visible light-induced [4+ 2] benzannulation of biaryldiazonium salts with alkynes was developed. With eosin Y as photoredox catalyst, a variety of 9-substituted or 9, 10-disubstituted phenanthrenes were obtained via a cascade radical addition and cyclization sequence.