Hypervalent iodine(<scp>iii</scp>) catalyzed oxidative C–N bond formation in water: synthesis of benzimidazole-fused heterocycles
作者:D. Nageswar Rao、Sk. Rasheed、Ram A. Vishwakarma、Parthasarathi Das
DOI:10.1039/c4ra02279c
日期:——
A diverse array of benzimidazole-fused heterocycles was synthesized by in situ generated hypervalent iodine(iii) catalyzed intramolecular oxidative C–N bond formation in water and under ambient conditions.
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