作者:Ulf Hanefeld、Charles W. Rees、Andrew J. P. White、David J. Williams
DOI:10.1039/p19960001545
日期:——
1-Alkyl-5-amino-3-aryl-4-cyanopyrazoles, useful intermediates for fused heterocyclic systems, are synthesised by a one-pot three-step procedure from acid chlorides, malononitrile and alkylhydrazines, The regiochemistry of the hydrazine incorporation was proved in each case by X-ray crystallography and NMR spectroscopy.