Allylation with substituted vinylthionium ions from SnCl4 ionisation of 1,3- and 3,3-bis(alkyl/phenylthio)propenes

Article abstract of DOI:10.1016/S0040-4020(01)85514-9

α- and γ-substituted vinylthionium ions from SnCl₄ ionisation of a range of substituted 1,3- and 3,3-bis(alkyl/phenylthio)propenes allylate enol silyl ethers in good yield. Levels of regioselectivity are sterically dependent and in the case of