Polystyrene-supported palladium(II) N,N-dimethylethylenediamine complex: A recyclable catalyst for Suzuki–Miyaura cross-coupling reactions in water

The Current Status of Heterogeneous Palladium Catalysed Heck and Suzuki Cross-Coupling Reactions

In the last 30 years, C–C cross coupling reactions have become a reliable technique in organic synthesis due their versatility and efficiency. While drawbacks have been experienced on an industrial scale with the use of homogenous systems, many attempts have been made to facilitate a heterogeneous renaissance. Thus, this review gives an overview of the current status of the use of heterogeneous catalysts particularly in Suzuki and Heck reactions. Most recent developments focus on palladium immobilised or supported on various classes of supports, thus this review highlights and discuss contributions of the last decade.

A 2-((4-Arylpiperazin-1-yl)methyl)phenol ligated Pd(ii) complex: an efficient, versatile catalyst for Suzuki–Miyaura cross-coupling reactions

N,N,O-Tridentate palladium(ii) complex 4a was found to be an efficient catalyst for the Suzuki cross-coupling reaction of aryl halides (iodo-, bromo- and chloro-), which afforded cross-coupling products in good to excellent yields.

Polystyrene supported N-phenylpiperazine–Cu(ii) complex: an efficient and reusable catalyst for KA2-coupling reactions under solvent-free conditions

Propargylamines were synthesized in excellent yields from cyclohexanone and pentanone with a variety of secondary amines and alkynes by employing a new polystyrene supported N-phenylpiperazine–Cu(ii) complex 4c.