Regioselective Synthesis of 1,3,5-Trisubstituted Pyrazoles
作者:Vidya G. Desai、Pooja C. Satardekar、Sampada Polo、Kashinath Dhumaskar
DOI:10.1080/00397911.2010.531492
日期:2012.3.15
Abstract A new and a simple approach toward synthesis of 1,3,5-trisubstitutedpyrazoles from chalcone arylhydrazones via oxidative cyclization has been achieved. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone was successfully used as an oxidizing agent to give excellent yields of pyrazoles. GRAPHICAL ABSTRACT