4.4 Article

Layered zirconium sulfophenyl phosphonate as heterogeneous catalyst in the synthesis of pyrazoles and 4,5,6,7-tetrahydro-1(2)H-indazoles

Journal

SYNLETT
Volume -, Issue 19, Pages 2927-2930

Publisher

GEORG THIEME VERLAG KG
DOI: 10.1055/s-2005-921904

Keywords

zirconium sulfophenyl phosphonate; heterogeneous catalysis; solvent free reactions; pyrazoles; indazoles

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Pyrazoles and tetrahydroindazoles may be prepared by condensation of 1,3-diones and hydrazines under layered zirconium sulfophenyl phosphonate catalysis, in solvent-free conditions.

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