Verfahren zur Herstellung von 1:2-Metallkomplexazofarbstoffen
申请人:CIBA-GEIGY AG
公开号:EP0241414B1
公开(公告)日:1991-05-08
Room-Temperature Direct Alkenylation of 5-Pyrazolones
作者:Yiwen Yang、Hao Gong、Chunxiang Kuang
DOI:10.1002/ejoc.201300765
日期:2013.8
A mild and efficient method for the directalkenylation of 5-pyrazoles by Pd-catalyzed C–H bond activation is described. The reaction smoothly proceeds at room temperature to provide products in up to 92 % yield.