Weakly ligated palladium complexes PdCl2(RCN)2 in piperidine: versatile catalysts for Sonogashira reaction of vinyl chlorides at room temperature
摘要:
Copper iodide and weakly ligated palladium complexes PdCl2(RCN)(2) (R = Ph, Me) catalyzed efficiently the coupling reaction of vinyl chlorides with 1-alkynes in the presence of piperidine to give the corresponding conjugated enynes in good to excellent yields. The reaction takes place rapidly and cleanly at room temperature. Application to the synthesis of terbinafine which exhibits strong antimycotic activity has been realized. (C) 2001 Elsevier Science B.V. All rights reserved.
An Efficient palladium-catalysed reaction of vinyl and aryl halides or triflates with terminal alkynes
作者:Mouaˆd Alami、Fabiola Ferri、Gérard Linstrumelle
DOI:10.1016/0040-4039(93)85056-3
日期:1993.10
In the presence of tetrakis(triphenylphosphine)palladium, vinyl and arylhalides or triflates react very rapidly in piperidine or pyrrolidine with terminalalkynes to give conjugated enynes and aryl acetylenes in high yields.