7205-91-6

Reagent for the high-yield thiomethylation of O-silylated lactone and ester enolates in the synthesis of α-methylene lactones and esters.1

Dissolve the sulfide in CH2Cl2 or CCl4 and dry it (CaCl2), or pass it through a tube of CaCl2 and distil it using a fractionating column. Harmful vapours. It gives the sulfone [7205-98-3] (b 130o/1mm and m 53o from EtOH) [Beilstein 6 IV 1507] on oxidation with permonophthalic acid. [B.hme et al. Justus Liebigs Ann Chem 563 54 64 1949.] [Beilstein 6 III 1002.]