133618-94-7Relevant articles and documents
Enantioselective oxidation of thioethers. A route to the resolution of -2,2'-dithiol
Furia, F. di,Licini, G.,Modena, G.,Valle, G.
, p. 734 - 744 (2007/10/02)
A route to the resolution of racemic -2,2'-dithiol 2 is described, involving the transformation of 2 into a series of dithioethers.The latter are subjected to asymmetric oxidation to monosulfoxides by a procedure developed in our laboratory.For some of the thioethers examined the oxidation is highly diastereo- and/or enantioselective.The resolved 2 is then obtained from the optically pure monosulfoxides either by oxidation to the bis-sulfoxides followed by a Pummerer reaction or by a deoxygenation to the dithioether and subsequent reduction.In both cases enantiomerically pure 2 (e.e. > 98percent) was obtained.Keywords: enantioselective oxidation / optical resolution / thioethers / -2,2'-dithiol