Organic & biomolecular chemistry

Highly efficient and regiospecific photocyclization of 2, 2′-diacyl bixanthenylidenes

M Mao, QQ Wu, MG Ren, QH Song

Index: Mao, Mao; Wu, Qing-Qing; Ren, Ming-Guang; Song, Qin-Hua Organic and Biomolecular Chemistry, 2011 , vol. 9, # 9 p. 3165 - 3169

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Citation Number: 4

Abstract

In contrast to the reversible photochemistry of the 2, 2′-substituted bixanthenylidenes (1a– f), the photocyclization of 2, 2′-diacyl bixanthenylidenes (1g–j) reveals an irreversible process where the initial cyclic intermediate C (E) can undergo a rapid [1, 11] hydrogen shift