A convenient synthesis of 2-arylindazol-3-ones

…, JCW Chng, NH Rama, A Saeed

Index: Bird; Chng; Rama; Saeed Synthetic Communications, 1991 , vol. 21, # 4 p. 545 - 548

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Citation Number: 7

Abstract

In connection with studies on the thermal rearr- angement of 1-cpano-2-arylindazolones to benzimidazo- [ 2 , lb]quinazolonesl " a convenient source of the pre- cursor 2-arylindazolones was required. The most widely used routes to these compounds are the hizh pressure transition metal catalysed carbonylation of azobenzen- 3 ... TABLE. Cyclisation of - o-Nitrobenzanilides I Indazolone (11) Yield (%I mp ("C) Ref. ... Phenyl - 0-Tolyl p-To 1 y 1 - o-Anisyl

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