Abstract 1-Oxo-4-chlorocarbony1-1-phospha-2, 6, 7-trioxabicyclo [2.2. 2] octane (5) was obtained from phosphorus oxychloride. Benzyl chloroformate was synthesized by the reaction of benzyl alcohol and triphosgene in good yield for the first time. Nr-Butyl-N- benzoylhydrazine (II) was prepared in a new and convenivent procedure with good yield. The reaction of 5 and II proceeded smoothly in the presence of sodium carbonate and ...
![1-oxo-2,6,7-trioxa-1λ5-phosphabicyclo[2.2.2]octane-4-carboxylic acid Structure](https://image.chemsrc.com/caspic/040/99141-79-4.png)