Ni-Catalyzed Enantioselective Reductive Diarylation of Activated Alkenes by Domino Cyclization/Cross-Coupling
摘要:
A Ni-catalyzed enantioselective reductive diarylation of activated alkenes by domino cyclizative/ cross-coupling of two aryl bromides is developed. This reaction proceeds under very mild conditions and shows broad substrate scope, without requiring the use of preformed organometallic reagents. Moreover, this approach provides direct access to various bis-heterocycles bearing all-carbon quaternary centers in synthetically useful yields (up to 81%) with excellent enantioselectivity (>30 examples, 90-99% ee).
Metal-Free Meerwein Carboarylation of Alkenes with Anilines: A Straightforward Approach to 3-Benzyl-3-alkyloxindoles
作者:Shi Tang、Dong Zhou、Ying-Chun Wang
DOI:10.1002/ejoc.201402010
日期:2014.6
A metal-free, straightforwardcarboarylation reaction of alkenes with anilines was developed that proceeds through a radical C–H cyclization. In the presence of benzoyl peroxide (5 mol-%), tert-butyl nitrite, and an array of anilines, a wide variety of N-arylacrylamides underwent a tandem Meerwein arylation/C–H cyclization to construct the pharmaceutically important 3-benzyl-3-alkyloxindole scaffold
Copper-catalyzed Meerwein carboarylation of alkenes with anilines to form 3-benzyl-3-alkyloxindole
作者:Shi Tang、Dong Zhou、YouLin Deng、ZhiHao Li、You Yang、JianGuang He、YingChun Wang
DOI:10.1007/s11426-014-5158-z
日期:2015.4
A simple and direct route for double C-C bond formation by copper-catalyzed Meerweincarboarylation process has been developed. In the presence of CuI (5 mol%), tert-butyl nitrite and anilines, a wide variety of N-arylacrylamides underwent tandem Meerwein arylation/C-H cyclization to produce pharmaceutically important 3-benzyl-3-alkyloxindole in moderate to good yield.