Acid catalysis in the intramolecular addition of α-lithiosulphoxides to isolated double bonds
Abstract
Intramolecular addition of a α-sulphinyl carbanion to an isolated double bond is observed with mesocyclic metallated E homoallylic sulphoxides (1) and (2); kinetic data suggest that this process is acid catalysed and that free (1) is the proton donor species.