Synonym(s): (−)-1,4-Bis(diphenylphosphino)-1,4-dideoxy-2,3- O -isopropylidene- L -threitol; (4 R ,5 R )-4,5-Bis(diphenylphosphino-methyl)-2,2-dimethyl-1,3-dioxolane; (4 R - trans )-[(2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(methylene)]bis(diphenylphosphine); ( R , R )-DIOP Empirical Formula:...