STRUCTURE AND SOME REACTIONS OF PHOSPHAZIDES

Abstract

Abstract The molecular structure of phosphazides, R3PN3R′, formed in the Staudinger reaction as intermediates was studied by X-ray analysis. The essentially zwitterionic character of these compounds and (E)-arrangement of their charged terminal groups relative to central N—N double bond in PN3 chain were established. The alkylation of phosphazides by triethyloxonium tetrafluoroborate was found to proceed in regio- and stereospecific manner at the negatively charged nitrogen atom.