Gl. Kad et al., MICROWAVE-ASSISTED PREPARATION OF 1,3-DITHIOLANES UNDER SOLVENT FREE CONDITIONS, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 37(2), 1998, pp. 172-173
Various carbonyl compounds react efficiently with 1,2-ethylenedithiol
by microwave irradiation using mildly acidic K-10 clay within a few mi
nutes and furnish the products in high yield under solvent free condit
ions.