Polyfluoroalkanediyl Bis(Phosphates), 5,5,6,6-Tetrafluoro-2-Hydroxy-1,3,2-Dioxaphosphepane 2-Oxide, and Their Precursors

摘要

Although some mono cyclophosphoric esters and alkanediyl bis(phosphates)have been synthesized as mixtures, there appears to be little evidence of attempts to isolate and to purify them. No reports of their polyfluorinated analogues have been found. However, the latter compounds do have potential characteristics for serving a wide variety of roles such as electrolytes in fuel cells, polymerization inhibitors, and structural analogues of fructose diphosphates and in model studies of arrangements of phosphate and metal binding subsites in biological systems. Synthesis and characterization of new materials as precursors to these mono- and bis(phosphates) were undertaken. These included initial syntheses of 2-chlorodioxaphosphepane and bis(phosphorodichloridites) and the resepctive 2-chlorodioxaphosphepane 2-oxide and bis(phosphorodichloridates). The last two compounds were hydrolyzed or otherwise converted to 2-hydroxy-1,3,2-dioxaphosphepane 2-oxide and bis(phosphates). (Reprints).