作者:Hua Chen、Lei-Lei Wu、Yi-Cen Ge、Ting He、Lei Zhang、Xing-Li Fu、Hai-Yan Fu、Rui-Xiang Li
DOI:10.1055/s-0031-1290772
日期:2012.5
An efficient, general, one-pot, three-component procedure for the preparation of 3,5-disubstituted 1H-pyrazoles via condensation of substituted aromatic aldehydes, tosylhydrazine and terminal alkynes in toluene is reported. The reaction tolerates a variety of functional groups and sterically hindered substrates to afford the desired pyrazoles in yields of 67-91%.