Sulphide extrusion from methyl sulphonium salts of the sulphur-bridged sesquiterpenes, mintsulphide and isomintsulphide by alkyl-lithium
Abstract
Reaction of the methylsulphonium salts of mintsulphide (1) and isomintsulphide (2) with methyl-lithium gives the desulphurization products, via the biradical intermediates, and the [2,3]sigmatropic re-arrangement products.