Highly regioselective synthesis of aryl chalcogenides through C–H functionalization of arenes
作者:Jun-Hao Cheng、Chih-Lun Yi、Tsung-Jui Liu、Chin-Fa Lee
DOI:10.1039/c2cc33950a
日期:——
We report here the regioselective synthesis of aryl chalcogenides through the iridium-catalyzed meta CâH borylation followed by copper-catalyzed CâS coupling reaction with chalcogenide sources in one pot, giving the 3,5-disubstituted aryl chalcogenides with high regioselectivity and good yields.
An Efficient Protocol for the Carbon–Sulfur Cross-Coupling of Sulfenyl Chlorides with Arylboronic Acids using a Palladium Catalyst
作者:Prasanta Gogoi、Mukul Kalita、Pranjit Barman
DOI:10.1055/s-0033-1340841
日期:——
An efficient protocol for carbon-sulfur bond formation is developed, which involves the cross-coupling of sulfenyl chlorides and arylboronic acids catalyzed by a novel palladium-Schiff base complex. Good to high product yields, short reaction times, and mild reaction conditions are important features of this new method.
Microwave-Assisted Efficient Synthesis of Aryl Thioethers through C-H Functionalization of Arenes
作者:Chin-Fa Lee、Yi-Chen Liu
DOI:10.1055/s-0033-1339666
日期:——
Microwave-assisted iridium-catalyzed meta C-H borylation followed by copper-promoted C-S bond coupling reactions in one pot is reported. This approach enables the syntheses of aryl thioethers in short reaction times (within 2.5 hours). The system shows good functional-group compatibility, as chloro, trifluoromethyl, fluoro, and pyridine groups are tolerated by the reaction conditions. Both aryl and alkyl thiols are coupled smoothly. The products were formed with excellent regioselectivity in meta position.