... Scheme 1. Synthesis of Dicubyl Disulfide (1) a. ... compound's low-temperature proton-decoupled 13 C NMR spectra in CD 2 Cl 2 in a mixture with t-BuSSBu-t (5) and chiral ... NBO analysis 26 for the MeSSR trans transition states (R = t-Bu, C 8 H 7 ) illustrates that the p−π sulfur lone ...