2-Chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane may be used to synthesize:3,5-di-O-benzyl-2-deoxy-4-O-(5,5-dimethyl-1,3,2-dioxaphosphorin-2-yl)-D-erythro-pentose diethyl dithioacetal(2-chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane)tetracarbonyliron, (2-Cl-DMP)Fe(CO)4bis(p-5,5-dimethyl-1,3,2-dioxaphosphorinano)-diiron hexacarbonyl, [(p-DMP)Fe(CO)3]2tungsten (Z)-1,2-diphosphite-alkene tetracarbonyl complexestungsten (E)-vinyl-phosphite pentacarbonyl complexes