A new copper-catalyzed oxysulfenylation reaction of enolates with sodium sulfinates has been disclosed. A series of sulfenylated heterocycles including four- and seven-membered cyclic ether were obtained in mild to good yields. This reaction is proposed to go through a radical process, and the sulfur radical (RS•) may be a reactive species.
Trifluoroacetoxysulphenylation of unsaturated nitriles as a route to lactones
作者:Zakaria K M Abel El Samii、Mohamed I Al Ashmawy、John M. Mellor
DOI:10.1016/s0040-4039(00)85194-1
日期:1986.1
Use of manganic acetate as oxidant permits efficient trifluoroacetoxysulphenylation of unsaturated nitriles with organic disulphides. The adducts in a cobaltous chloride promoted hydrolysis afford alkyl- or aryl-thio substituted lactones.