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
An Efficient Suzuki-Miyaura Coupling of Aryl Sulfamates and Boronic Acids Catalyzed by NiCl2(dppp)
作者:Guo-Jun Chen、Fu-She Han
DOI:10.1002/ejoc.201200444
日期:2012.7
The SuzukiMiyaura cross-coupling of aryl sulfamates and boronicacids was investigated by using [1,3-bis(diphenylphosphanyl)propane]nickel(II) chloride NiCl2(dppp)} as the catalyst. The results showed that NiCl2(dppp) is a highly active and general catalyst that allows effective SuzukiMiyaura cross-coupling of aryl sulfamates with a slight excess amount of the boronicacid (1.2 equiv.) in the presence
Aryl Phosphoramides: Useful Electrophiles for Suzuki-Miyaura Coupling Catalyzed by a NiCl2/dppp System (dppp=1,3-Bis(diphenylphosphino)propane)
作者:Yu-Long Zhao、You Li、Yu Li、Lian-Xun Gao、Fu-She Han
DOI:10.1002/chem.201000420
日期:——
Suzuki–Miyauracoupling: We disclose a new strategy for phenol activation in the first Suzuki–Miyauracoupling of phenol derivatives activated by forming aryl bis(2‐oxo‐3‐oxazolidinyl)phosphines as a highly efficient and broadly applicable methodology for the diverse synthesis of biaryls and heterobiaryls (see scheme). The use of readily available, stable NiCl2/dppp as the catalyst system also provides
Process for the palladium-catalyzed coupling of terminal alkynes with aryl tosylates
申请人:RKYEK Omar
公开号:US20100261910A1
公开(公告)日:2010-10-14
The present invention relates to a process for the regioselective synthesis of compounds of the formula (I),
wherein R1; R2; R3; R4; R5; J and W have the meanings indicated in the claims. The present invention provides an efficient and general palladium-catalyzed coupling process for aryl tosylates with terminal alkynes to a wide variety of substituted, multifunctional aryl-1-alkynes of the formula I.