The invention provides new heterocyclic compounds having the general formula (I) wherein B, C, L, X, Y, RL and R3 to R5 are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds.
Inverting Conventional Chemoselectivity in Pd-Catalyzed Amine Arylations with Multiply Halogenated Pyridines
作者:Mitchell H. Keylor、Zachary L. Niemeyer、Matthew S. Sigman、Kian L. Tan
DOI:10.1021/jacs.7b05409
日期:2017.8.9
A new catalyst system capable of selective chloride functionalization in the Pd-catalyzedamination of 3,2- and 5,2- Br/Cl-pyridines is reported. A reaction optimization strategy employing ligand parametrization led to the identification of 1,1′-bis[bis(dimethylamino)phosphino]ferrocene “DMAPF”, a readily available yet previously unutilized diphosphine, as a uniquely effective ligand for this transformation