Remote aromatic metalation. An anionic Friedel-Crafts equivalent for the regioselective synthesis of condensed fluorenones from biaryl and m-teraryl 2-amides

…, BP Zhao, MJ Sharp, V Snieckus

Index: Fu, Jian-min; Zhao, Bao-ping; Sharp, M. J.; Snieckus, V. Journal of Organic Chemistry, 1991 , vol. 56, # 5 p. 1683 - 1685

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Citation Number: 92

Abstract

Summary: Remote metalation (t-BuLi, LDA) of m-teraryl and biaryl amides (Scheme I) constitutes a short and convenient route to a variety of substituted and condensed fluorenones, including aza analogues (Table I) and the natural product, dengibsinin (6a, Scheme 11).