Abstract: Methyl, ethyl,-isopropyl, neopentyl, cyclopentyl, cyclohexyl, and benzyl benzenesulfenates have been allowed to react respectively with trimethyl, triethyl, triisopropyl, trineopentyl, tricyclopentyl, tricyclohexyl, and tribenzyl phosphites. In all cases pentaalkoxylphosphoranes were formed. Varying degrees of stability have been found for these substances. They have been characterized by IH, 3'P, and'3C NMR. Several of them ...