Highly Regioselective Synthesis of 1-Aryl-3 (or 5)-alkyl/aryl-5 (or 3)-(<i>N</i>-cycloamino)pyrazoles
作者:S. Peruncheralathan、A. K. Yadav、H. Ila、H. Junjappa
DOI:10.1021/jo051478u
日期:2005.11.1
An efficient highlyregioselective protocol for the synthesis of isomeric 1,3-diaryl (or 1-aryl-3-alkyl) and 1,5-diaryl (or 1-aryl-5-alkyl)-5 (or 3)-(N-cycloamino)pyrazoles has been reported by cyclocondensation of common α-oxoketene N,S-acetal precursors with arylhydrazines by variation of reaction conditions.