Organic letters

Novel and Rapid Palladium-Assisted 6π Electrocyclic Reaction Affording 9, 10-Dihydrophenanthrene and Its Analogues†

R Jana, I Chatterjee, S Samanta, JK Ray

Index: Jana, Rathin; Chatterjee, Indranil; Samanta, Shubhankar; Ray, Jayanta K. Organic Letters, 2008 , vol. 10, # 21 p. 4795 - 4797

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Citation Number: 49

Abstract

The extraordinary CC bond-forming ability of palladium places it among the most versatile and useful metals in organic synthesis.1 Among these, polycyclic aromatic and heteroaromatic hydrocarbons have been widely studied for their unique properties in material science.2 Heck first reported the synthesis of 9,10-diphenylphenanthrene from 2-iodobiphenyl and diphenyl acetylene by a palladium- catalyzed annulation process; however, the yield was 14%.3 Later, Larock ...