Studies On The Ni-catalyzed Suzuki-Miyaura Coupling Reaction

The establishment of the sp2sp2 C?C bond formation is the organic synthesis of molecules of building one of the most important instruments. The transition-metal-catalyzed cross-coupling is an exceedingly powerful tool for the sp2?sp2 C-C bond formation. The reaction selectivity wider with substrate, mild reaction conditions and post-processing easy, etc. Compared with the palladium catalyst, nickel catalyst has good thermal stability, high catalytic efficiency and low prices, applicability etc. Characteristics. Therefore, in nickel catalyst replace palladium catalyst Suzuki cross coupling reaction has the important practical significance.This paper studies that NiCl₂(dppp) catalyst is a highly active, universally applicable, cheap, and stable catalyst for Suzuki-Miyaura cross-coupling of aryl halides with a catalyst loading of lower than 1 mol %, in the absence of extra supporting ligands.At the same time, this paper have presented a new strategy for phenol activation by using BOP-Cl(Bis(2-oxo-3-oxazolidinyl) and have demonstrated for the first time that Suzuki–Miyaura couplings of the derived aryl BOPs can be an efficient and broadly applicable method for the synthesis of biaryls.