Direct arylations of electron-deficient (hetero)arenes with aryl or alkenyl tosylates and mesylates
作者:Lutz Ackermann、Sabine Fenner
DOI:10.1039/c0cc02360d
日期:——
A palladium catalyst derived from the ligand X-Phos enabled generally applicable directarylations of electron-deficient heteroarenes and arenes with aryl and alkenyl tosylates or mesylates.
Direct arylation of azine N-oxides with aryl triflates
作者:Derek J. Schipper、Mohamed El-Salfiti、Christopher J. Whipp、Keith Fagnou
DOI:10.1016/j.tet.2009.03.077
日期:2009.6
Palladium catalyzed direct arylation of azine N-oxides using aryltriflates to afford the corresponding 2-aryl azine N-oxides is described. The reaction is carried out with a range of both N-oxides and aryltriflates. The arylation can be carried out in sequence to yield differentially diarylated products. The regioselectivity and scope of 3-substituted azine N-oxides are investigated. The method is