Generation and trapping of monomeric metaphosphoric acid esters in solution: Mechanistic investigation into the fragmentation of mixed carbonic-phosphoric acid anhydrides and the chelotropic breakdown of cyclic pyrocarbonate esters

✍ Scribed by Malcolm R. Banks; Ian Gosney; Derek Kilgour; J. I. G. Cadogan; Philip K. G. Hodgson

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 994 KB
• Volume: 7
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/(sici)1098-1071(199611)7:6<503::aid-hc12>3.0.co;2-u

✦ Synopsis

The generation of alkyl-substituted monomeric metaphosphoric acid esters (ROPO,) 4 in solution is described, utilizing two different methods based o n the condensation of alkyl phosphorodichloridates either with anhydrous potassium hydrogen carbonate or with the novel disodium pyrocarbonate salt 5 , which is formed in quantitative yield from diethyl pyrocarbonate by treatment with two equivalents of sodium trimethylsilanolate in THF at 0°C. The first method is believed to proceed via a transient mixed carbonic-Dedicated to Prof.