1231261-89-4Relevant articles and documents
An efficient suzuki-miyaura coupling of aryl sulfamates and boronic acids catalyzed by NiCl2(dppp)
Chen, Guo-Jun,Han, Fu-She
supporting information; experimental part, p. 3575 - 3579 (2012/07/27)
The Suzuki-Miyaura cross-coupling of aryl sulfamates and boronic acids was investigated by using [1,3-bis(diphenylphosphanyl)propane]nickel(II) chloride {NiCl2(dppp)} as the catalyst. The results showed that NiCl 2(dppp) is a highly active and general catalyst that allows effective Suzuki-Miyaura cross-coupling of aryl sulfamates with a slight excess amount of the boronic acid (1.2 equiv.) in the presence of a low catalyst loading (generally 1.0-1.5 mol-%). The method also displays broad generality not only to various aryl sulfamates, but also to an array of boronic acids. Furthermore, various functional groups are tolerated. These apparent advantages make NiCl2(dppp) a practical and reliable catalyst system for the Suzuki-Miyaura coupling of aryl sulfamates.
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 1amol% loading
Gao, Han,Li, You,Zhou, Yi-Guo,Han, Fu-She,Lin, Ying-Jie
supporting information; experimental part, p. 309 - 314 (2011/04/18)
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 1amol% loading and in the absence of extra supporting ligand. Under the optimized reaction conditions, cross-coupling of a wide range of activated, non-activated, and deactivated, as well as sterically hindered and heteroaromatic substrates (36 examples) could proceed efficiently to afford the coupled products in 53-99% yields. Consequently, the results presented in this work provide a significant advance in Suzuki-Miyaura cross-coupling in terms of generality, practicality, and cost which are key concerns in recent research regarding transition metal-catalyzed cross-couplings.
