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■ Reduction of Nitroindazoles: Preparation of New Amino and Chloroamino Derivatives

Abdellah Miloudi, Douniazed El Abed, Gerard Boyer,* and Jean-Pierre Galy

*UMR Symbio 6178, case 552, University Paul Cezanne, Avenue Escardrille Normandie-Niemen, 13397 Marseille Cedex 20, France

Abstract

The synthesis of chloroaminoindazoles by the reduction of the nitro group of indazoles using stannous chloride in alcoholic acid solution is reported. Using catalytic hydrogenation with palladium the expected reduction to amino-indazoles occur.