IXmethyl (methy1thio) sulfonium fluoroborate (1) and methanesulfenyl chloride (2) react rapidly with 2, 2-bis (methylt, hio) propane (5), 2, 2-dimethyl-1, 3-dithiolane (6), and 2, 2- dimethyl-1, 3-dithiane (7) in nitromethane or tlichloromethane to cleave both thioketal carbon-sulfur bonds. A product of structure (CH&C (SCHs) X, X= C1 sr S+(C: H&,-BF4, was obtained from all three acetone thioketals together with methyl disulfide from 5 and ...
