Synthesis of dibenzo [b, f][1, 4] oxazepin-11 (10H)-ones from 2-nitrobenzoic acids

…, KA Kislyi, VN Marshalkin, VV Semenov

Index: Samet; Kislyi; Marshalkin; Semenov Russian Chemical Bulletin, 2006 ,  vol. 55,  # 3  p. 549 - 553

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Citation Number: 5

Abstract

Abstract Base-catalyzed intramolecular nucleophilic substitution for the 2-nitro group in 2- hydroxyanilides of 2-nitrobenzoic acids gave dibenzo [b, f][1, 4] oxazepin-11 (10 H)-ones. In particular, 3-nitrodibenzo [b, f][1, 4] oxazepin-11 (10 H)-one was obtained from N-(2- hydroxyphenyl)-2, 4-dinitrobenzamide. The nitro group in the product could also be replaced under the action of O-and S-nucleophiles.