Palladium(<scp>II</scp>
) Chloride and a (Dipyridin-2-ylmethyl)amine-Derived Palladium(<scp>II</scp>
) Chloride Complex as Highly Efficient Catalysts for the Synthesis of Alkynes in Water or in NMP and of Diynes in the Absence of Reoxidant
作者:Juan Gil-Moltó、Carmen Nájera
DOI:10.1002/ejoc.200500319
日期:2005.10
(dipyridin-2-ylmethyl)amine-derived palladium chloride complex 1 and PdCl2 are efficient catalysts for cross-coupling reactions between terminalalkynes and aryl iodides or bromides under modified Sonogashira–Cassar–Heck conditions. The alkynylation can be performed under copper-free conditions in water at reflux or at room temperature underair with pyrrolidine as base and tetra-n-butylammonium bromide (TBAB)