Synthesis and characterization of four-membered, spirobicyclic, transition-metal-substituted phosphoranes

Abstract

The nucleophilic substitution reactions of [graphic omitted]Cl [R = R′= CH₃, (1a); C₆H₅, (1b); R = CH₃, R′= C₆H₅, (1c)] with Na[Mn(CO)₅] in tetrahydrofuran at –78 °C result in the synthesis of a new class of four-membered spirobicyclic transition-metal-substituted phosphoranes in which the five-co-ordinated phosphorus is bonded to heteroatoms other than oxygen. These compounds have been characterized by elemental analysis, n.m.r. spectroscopy (¹H and ³¹P), and thermal analysis.