A dichlorodioxomolybdenum(VI)-catalyzed oxotransfer allows a chemoselective deoxygenation of sulfoxides to sulfides in the presence of P(OPh)3 as the stoichiometric reductant.
R. Sanz, J. Escribano, R. Aguado, M. R. Pedrosa, F. J. ArnŠiz, Synthesis, 2004, 1629-1632.
The combination of Re2O7 as catalyst and triphenyl phosphite as a reductant enables the deoxygenation of unactivated aliphatic epoxides to alkenes. The reaction proceeds stereospecifically with variously substituted epoxides under neutral conditions and tolerates various functional groups.
T. Nakagiri, M. Murai, K. Takai, Org. Lett., 2015, 17, 3346-3349.