Tetrahedron

An advantageous synthesis of new indazolone and pyrazolone derivatives

A Correa, I Tellitu, E Domínguez, R SanMartin

Index: Correa, Arkaitz; Tellitu, Imanol; Dominguez, Esther; SanMartin, Raul Tetrahedron, 2006 , vol. 62, # 48 p. 11100 - 11105

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Citation Number: 35

Abstract

The synthesis of new indazolone and pyrazolone derivatives starting from methyl anthranilate type substrates is presented. This general approach constitutes a novel and advantageous alternative for the synthesis of the target heterocycles, which implies the use of the environmentally friendly oxidizer PIFA. The synthetic design includes the oxidation of N-arylamides by the hypervalent iodine reagent to the corresponding N-acylnitrenium ions ...

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