Stereoselective synthesis of 2-alkylidene-3-iminoindoles by reaction of 1, 1-dianions with oxalic acid bis (imidoyl) chlorides

…, J Wuckelt, M Döring, H Görls

Index: Lindauer, Dirk; Beckert, Rainer; Doering, Manfred; Fehling, Peer; Goerls, Helmar Journal fuer Praktische Chemie/Chemiker-Zeitung, 1995 , vol. 337, # 2 p. 143 - 152

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Citation Number: 20

Abstract

Treatment of dilithiated nitriles and sulfones with oxalic acid bis (imidoyl) chlorides resulted in a new cyclization reaction which provided a variety of (3-imino-2, 3-dihydro-1 H-indol-2- ylidene) acetonitriles and-sulfones in good yields. The reactions proceeded by