A new 1,2-rearrangement of carbon from sulphur to carbon in 2,2-diaryl-1,3-dithianes
Abstract
2,2-Diaryl-1,3-dithianes undergo with lithium di-isopropylamide in tetrahydrofuran a Wittig-type rearrangement to form the anions of the 2,2-diaryltetrahydrothiophene-3-thiols which are further converted into bis(2,2-diaryltetrahydrothiophen-3-yl) disulphides by treatment with aqueous ammonium chloride and after subsequent autoxidation.