Described are palladium precatalysts, and methods of making and using them. The palladium precatalysts show improved stability and improved reactivity in comparison to previously-described palladium precatalysts.
US8889857B2
申请人:——
公开号:US8889857B2
公开(公告)日:2014-11-18
US8981086B2
申请人:——
公开号:US8981086B2
公开(公告)日:2015-03-17
Design and preparation of new palladium precatalysts for C–C and C–N cross-coupling reactions
作者:Nicholas C. Bruno、Matthew T. Tudge、Stephen L. Buchwald
DOI:10.1039/c2sc20903a
日期:——
of easily prepared, phosphine-ligated palladiumprecatalysts based on the 2-aminobiphenyl scaffold have been prepared. The role of the precatalyst-associated labile halide (or pseudohalide) in the formation and stability of the palladacycle has been examined. It was found that replacing the chloride in the previous version of the precatalyst with a mesylate leads to a new class of precatalysts with