Highly efficient carbazolyl-derived phosphine ligands: application to sterically hindered biaryl couplingsElectronic supplementary information (ESI) available. See DOI: 10.1039/c1cc10708a.

Autor: Chun To, Sheung, Yee Kwong, Fuk
Předmět:
Zdroj: Chemical Communications; May2011, Vol. 47 Issue 17, p5079-5081, 3p
Abstrakt: A new family of phosphine ligands bearing a bulky carbazolyl scaffold is described. With the combination of ligand 2aand Pd(OAc)2, difficult tri-ortho-substituted biaryl couplings are accomplished smoothly. In particular, the catalyst loading as low as 0.02 mol% of Pd for non-activated 2,6-disubstituted aryl chloride coupling can be achieved. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index