The asymmetric homogeneous hydrogenation rhodium(I) catalyst of the chiral ligand 2R,3R-trans-bis(diphenylphosphinomethylene)-bicyclo (2,2,2) octane has been utilized to reduce various ketones. The experiments produce high chemical yields and high conversions to corresponding product alcohols but also poor optical purities due to the displacement of the chiral ligand by activation of the catalyst with OH$\sp-$ The desulfuration and sulfuration of linear organo-polysulfides has been studied. A new asymmetric dialkyl trisulfide, $n$-butyl-$t$-butyl trisulfide, has been prepared in a controlled method and has been used to study the desulfuration reaction of asymmetric polysulfides. Tricyclic organopolysulfides have also been synthesized thermally and photochemically. The photo-reactions show that these bicyclic olefins have a presudo-first order reaction with sulfur under 589 nm wave length light in carbon disulfide
