Pyridine??Catalyzed Double C–N Coupling Reaction of an Isocyanate with Two Benzynes

YH Lee, YC Chen, JC Hsieh

Index: Lee, Yi-Hsien; Chen, Yen-Chung; Hsieh, Jen-Chieh European Journal of Organic Chemistry, 2012 , # 2 p. 247 - 250

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Citation Number: 10

Abstract

Abstract A pyridine-catalyzed double C–N bond cross-coupling reaction involving two benzynes with an isocyanate was carried out. The coupling reaction proceeded through a unique pathway involving the formation of an unstable carbamic acid intermediate and facile decarboxylation. Subsequent nucleophilic addition/protonation of in situ prepared amines with benzynes afforded variously substituted diaryl-and triarylamines in moderate to good ...