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The efficient o-benzenedisulfonimide catalysed synthesis of benzothiazoles, benzoxazoles and benzimidazoles

M Barbero, S Cadamuro, S Dughera

Index: Barbero, Margherita; Cadamuro, Silvano; Dughera, Stefano Arkivoc, 2012 , vol. 2012, # 9 p. 262 - 279

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Citation Number: 6

Abstract

Abstract o-Benzenedisulfonimide has been used to efficiently catalyse the reaction between 2-aminothiophenol, 2-aminophenol, o-phenylenediamine and various ortho esters (28 examples; average yield 90%) or aldehydes (17 examples; average yield 72%) giving the corresponding benzofused azoles in excellent yields. Reaction conditions were very simple. In addition, other carboxylic acid derivatives have been tested and gave good results. The ...

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~83%

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~85%

Detail

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