The reaction of trimer 6 and an alkyl lithium afforded thiolate 7 which reacted with primary halides to produce silyl thioethers in good to excellent yields. The silyl thioethers could be hydrolyzed to the thiols using HF in acetonitrile.
LANDRUM, DEBORAH C.;MAWHINNEY, THOMAS P., J. CHROMATOGR., 483,(1989) C. 21-32