• Alternative to CCl4 (ozone depleter) as a source of Cl in the chlorodehydroxylation of alcohols in the presence of PPh3. See also 1,2-Bis(diphenylphosphino)ethane, A11419. Source of Cl, e.g. in reactions of aryllithiums to give the regiospecifically chloro-substituted derivatives: Tetrahedron Lett., 36, 881 (1995).