17O and 18O Labeling Studies by NMR. Mechanism of Rearrangement of an α-Thiophosphoryl Trifluoroacetate to an α-Phosphoryl Thiotrifluoroacetate

Article abstract of DOI:10.1021/ja00279a052

Acetophenone-17O and acetophenone-18O have been condensed with hydrogen diethylthiophosphonate, and the resultant oxygen-labeled α-hydroxythiophosphonates, PhC(CH3)(*OH)PS(OEt)2, 13, were converted to the labeled trifluoroacetates PhC(CH3)(*OCOCF3)PS(OEt)