New Catalysts for Suzuki—Miyaura Coupling Reactions of Heteroatom-Substituted Heteroaryl Chlorides.

The new air-stable PdCl2{PR2(Ph-R‘)}2 complexes, readily prepared from commercial reagents, exhibit unique efficiency as catalysts for the Suzuki−Miyaura coupling reactions of a variety of heteroatom-substituted heteroaryl chlorides with a diverse range of aryl/heteroaryl boronic acids. The coupling reactions catalyzed by the new complexes exhibit high product yields (88−99%) and high catalyst turnover numbers (up to 10 000 TON).