N-substituted cyclic saturated sulfinamides were prepared from two secondary amine disulfides, 3-[(1-phenylethyl) amino] propyl disulfide and 3-(cyclohexylamino) propyl disulfide, and two bicyclic sulfinamides were made from 2-(2-piperidyl) ethyl disulfide and 2- (2-pyrrolidyl) ethyl disulfide by aqueous iodine oxidation. The rates of the oxidative cyclization of iodine oxidation of 34 (1-phenylethy1) aminolpropyl disulfide and of the two ...