Abstract: Prior research from this laboratory had demonstrated that monomeric metaphosphate ion, generated by fragmentation from P-bromophosphonate dianions, reacts with acetophenone in the presence of excess base to give a modest yield of 1-phenylvinyl phosphate. This paper expands on that finding; it presents studies of the effects of concentration of reagents, of solvents, and of variation in amine structure (ie, of the base) ...