A New Efficient Palladium Catalyst for Heck Reactions of Deactivated Aryl Chlorides

A new palladium catalyst consisting of Pd(Dba)2 and di-1-adamantyl-n-butylphosphine is described for the Heck reaction of non-activated and deactivated aryl chlorides. The new catalyst is more efficient and gives improved results compared to the previously known best catalyst system.