New Palladium (II) complex containing α-keto Phosphonium ylide; Synthesis, characterization and highly efficient Suzuki-Miyaura cross-coupling reactions

Palladium-catalyzed reactions, such as carbon-carbon bond formation, have attracted considerable interest [1]. Specifically, the Suzuki cross-coupling reaction of aryl halides with organoboron reagents is one of the most important and reliable methods for the construction of biaryls, which are present in a wide range of natural products, pharmaceuticals, agrochemicals and functional polymer materials [2]. In this abstract it is reported the synthesis of the complexes of the type {[(PPh3)3PCHC(O)C5H4CN]PdCl2} derived from the reactions of the dichloro(1,5cyclooctadiene) palladium(II) with related phosphorus ylide {(PPh3)3PCHC(O)C5H4CN} in dichloromethane. These compound have been characterized by, spectroscopic methods. Their structures consist of the ylidic carbon atom coordinated to the metal center. The coordination geometry around the Pd atoms in this complex can be defined as square planar[3]. The potential of this complex in catalyzing Suzuki-Miyaura cross-coupling of phenylboronic acid with several aryl halides has been done. Excellent yields of the desired products are obtained in competitive reaction time and under relatively mild conditions.