Regio- and Stereoselective Copper-Catalyzed Synthesis of Vicinal Haloamino Ketones fromα,β-Unsaturated Ketones
作者:Dianjun Chen、Cody Timmons、Steven Chao、Guigen Li
DOI:10.1002/ejoc.200400050
日期:2004.7
The regio- and stereoselective aminochlorination of α,β-unsaturatedketones has been developed. The reaction was conducted with N,N-dichloro-p-toluenesulfonamide (4-TsNCl2) as the nitrogen/halogen source and CuOTf as the catalyst, at 0 °C to room temperature. This method provides an easy access to vicinalhaloaminoketones, with excellent regioselectivity and up to quantitative yields. Both aromatic