[EN] 3-(PYRIDIN-3-YL)-ACRYLAMIDE AND N-(PYRIDIN-3-YL)-ACRYLAMIDE DERIVATIVES AND THEIR USE AS PAK OR NAMPT MODULATORS [FR] DÉRIVÉS 3-(PYRIDIN-3-YL)-ACRYLAMIDE ET N-(PYRIDIN-3-YL)-ACRYLAMIDE ET LEUR UTILISATION COMME MODULATEURS DE PAK OU NAMPT
A new transition-metal-free direct C−H trifluoromethylation reaction of (hetero)arenes with Togni’s reagent was developed. This transformation proceeded smoothly under mild conditions and exhibited good tolerance of many synthetically relevant functional groups. It provided an alternative approach for the synthesis of trifluoromethylated (hetero)arenes.
nickel-catalyzed C–Htrifluoromethylation for the synthesis of trifluoromethylated freeanilines using Togni’s reagent has been developed. This approach exhibits a good functional group tolerance, good regioselectivity, and chemoselectivity under mild conditions. The newly developed economical one-step method is a better alternative to synthesize trifluoromethylated freeanilines.
<i>Para</i>-Selective C–H Borylation of Common Arene Building Blocks Enabled by Ion-Pairing with a Bulky Countercation
作者:Madalina T. Mihai、Benjamin D. Williams、Robert J. Phipps
DOI:10.1021/jacs.9b07267
日期:2019.10.2
The selective functionalization of C–H bonds at the arene para position is highly challenging using transition metal catalysis. Iridium-catalyzed borylation has emerged as a leading technique for arene functionalization, but there are only a handful of strategies for para-selective borylation, which operate on specific substrate classes and use bespoke ligands or catalysts. We describe a remarkably