Mild Room-Temperature Palladium-Catalyzed C3-Arylation of 2(1<i>H</i>)-Pyrazinones via a Desulfitative Kumada-Type Cross-Coupling Reaction
作者:Vaibhav P. Mehta、Sachin G. Modha、Erik Van der Eycken
DOI:10.1021/jo901327y
日期:2009.9.4
An efficient desulfitative Kumada-type cross-coupling protocol is reported for the C3-arylation of 5-chloro-3-(phenylsulfanyl)pyrazin-2(1H)-ones. The method has also been successfully extended to the arylation of some (hetero)aryl thioethers and thioesters.
Microwave-Assisted Palladium-Catalyzed Phosphonium Coupling of 2(1<i>H</i>)-Pyrazinones
作者:Vaibhav P. Mehta、Sachin G. Modha、Erik V. Van der Eycken
DOI:10.1021/jo9024754
日期:2010.2.5
An expedient route for the synthesis of differently substituted 2(1H)-pyrazinones applying a microwave-assistedpalladium-catalyzed phosphonium coupling procedure is reported. The method has also been successfully extended to some other tautomerizable heterocycles for efficient C−C cross-coupling.