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Hydrido and hydroxyspirophosphoranes, cyclic tri-coordinated phosphorus compounds and a boron spirane involving a phenylenolpyruvate moiety were prepared from reactions between phenylpyruvic acid and phosphorus trichloride, or (and) chloro-2-dioxaphospholane 1,3,2, or (and) chloro-2-oxo-2-phenyl-4,5-dioxaphospholane 1,3,2, or (and) boric acid. The hydroxyphosphorane is a good model of the intermediate postulated in the hydrolysis of enolpyruvate phosphoric esters.
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