Rg. Cavell et al., HETEROBIFUNCTIONAL PHOSPHORUS-NITROGEN COMPOUNDS - IMINOPHOSPHORANOPHOSPHINES AND THEIR COMPLEXES, Phosphorus, sulfur and silicon and the related elements, 76(1-4), 1993, pp. 269-272
Heterobifunctional phosphorus compounds have been prepared by oxidizin
g one phosphorus atom of a bis(phosphine) with azides. A variety of ba
ckbone structures have been used with one and two carbon chains, satur
ated and unsaturated structures and RN. Some degree of steric control
appears to limit the extent of oxidation in cis bis(phosphines) with r
igid backbones. Trimethylsilyl azide gives silylated iminophosphoranes
with a reactive functionality on the imine nitrogen which can be repl
aced via metathetical elimination of Me3SiX or converted to the trimet
hylsiloxy metal derivative by rearrangement of the trimethylsilyl grou
p to terminal oxygen of a highly oxidized metal oxo precursor. Structu
ral features of several examples of the heterobifunctional phosphorus
compounds and their derivatives are described.