Highly Efficient Suzuki-Miyaura Coupling of Aryl Tosylates and Mesylates Catalyzed by Stable, Cost-Effective [1,3-Bis(diphenylphosphino)propane]nickel(II) Chloride [Ni(dppp)Cl2] with only 1 mol% Loading
作者:Han Gao、You Li、Yi-Guo Zhou、Fu-She Han、Ying-Jie Lin
DOI:10.1002/adsc.201000710
日期:2011.2.11
We present a highly active, inexpensive, universally applicable, and markedly stable [1,3-bis(diphenylphosphino)propane]nickel(II) chloride [Ni(dppp)Cl2] catalyst that is capable of effecting the Suzuki–Miyaura cross-coupling of the inherently less reactive but readily available aryl tosylates and mesylates with only 1 mol% loading and in the absence of extra supporting ligand. Under the optimized
我们提出了一种高活性,廉价,普遍适用且具有显着稳定性的氯化[1,3-双(二苯基膦基)丙烷]氯化镍(II)[Ni(dppp)Cl 2]催化剂,能够在固有的反应性较低但易于获得的芳基甲苯磺酸盐和甲磺酸盐(仅含1 mol%的负载量)且没有额外的支撑配体的情况下实现Suzuki-Miyaura交叉偶联。在优化的反应条件下,各种活化的,未活化的和失活的以及位阻和杂芳族底物(36个实例)的交叉偶联可以有效地进行,从而以53-99%的收率提供偶联产物。因此,这项工作中提出的结果在通用性,实用性和成本方面为铃木-宫浦交叉偶联提供了重大进展,这是最近有关过渡金属催化交叉偶联研究的重点。