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Paper | Regular issue | Vol 78, No. 4, 2009, pp.911-922
Published online, 4th December, 2008
DOI: 10.3987/COM-08-11531
Preparation of 4-Cyano-3-methyl-1-phenyl-1H-pyrazole-5-(4-bromophenyl)nitrile Imine: Regio- and Stereoselective Synthesis of a New Class of Substituted 3-Pyrazolines and Pyrazoles

Attreyee Mukherjee and Kumar K. Mahalanabis*

*Department of Chemistry, Jadavpur University, Kolkata-700032, India

Abstract

A regio and stereoselective preparation of a new class of substituted 3-pyrazolyl-2-pyrazolines and pyrazoles in good to excellent yields has been developed by reacting 4-cyanopyrazole-5-nitrile imine with dipolarophiles.