Stevens rearrangement of thioethers with arynes: a facile access to multi-substituted β-keto thioethers
作者:Xiao-Bo Xu、Zi-Hua Lin、Yuyin Liu、Jian Guo、Yun He
DOI:10.1039/c7ob00277g
日期:——
An effective method for the synthesis of multi-substituted β-keto thioethers via Stevens rearrangement of simple β-keto thioethers with arynes has been developed. In these reactions, successive C–S/C–H/C–C bonds were formed in one pot under mild and transition-metal free conditions to afford multi-substituted β-keto thioethers in moderate to good yields.
Expanding the horizon of intermolecular trapping of in situ generated α-oxo gold carbenes: efficient oxidative union of allylic sulfides and terminal alkynes via C–C bond formation
phosphine as the ligand to gold(I), the alpha-oxo gold carbenes generated in situ via gold-catalyzed intermolecular oxidation of terminal alkynes were effectively trapped by various allylic sulfides, resulting in the formation of alpha-aryl(alkyl)thio-gamma,delta-unsaturated ketones upon facile [2,3]sigmatropicrearrangements.
Photocatalytic [2,3]-Sigmatropic Rearrangement Reactions of Ethyl Diazoacetate
作者:Karabo M. Bopape、Aryan Shah、Rene M. Koenigs
DOI:10.1055/a-2201-7197
日期:——
We describe a photocatalytic reaction of diazo compounds with allyl sulfides under visible-light reaction conditions. In the presence of Ru(bpy)3Cl2 as a photocatalyst, a [2,3]-sigmatropic rearrangementreaction occurs that leads to the formation of homoallylic sulfides. This reaction proceeds in acetone as the solvent, which is unusual in carbene-transfer reactions, and it shows a broad substrate