Gold??Catalyzed Oxidative Cyclization of 1, 5??Enynes Using External Oxidants

…, S Bhunia, SA Gawade, A Das, RS Liu

Index: Vasu, Dhananjayan; Hung, Hsiao-Hua; Bhunia, Sabyasachi; Gawade, Sagar Ashok; Das, Arindam; Liu, Rai-Shung Angewandte Chemie - International Edition, 2011 , vol. 50, # 30 p. 6911 - 6914

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Citation Number: 120

Abstract

Pd-catalyzed oxidative cyclizations of 1, 6-enynes have found useful applications in organic synthesis,[1] but such reactions with Au and Pt catalysis remain largely unexplored.[2] Goldcatalyzed cycloisomerizations of 1, 5-and 1, 6-enynes provide uncommon and useful carbocyclic frameworks.[3] In the presence of organic oxidants, most enynes fail to produce oxidative cyclization products because oxidations of hypothetical gold–carbenoid ...