The chemistry of the phosphoryl linkage: examples of PIV→ PV and PIV→ PVI transformation under mild conditions
Abstract
Catechol and substituted catechols react with phosphonic acid or with phosphoryl chloride under mild conditions to give P-spirobis-(o-arylenedioxy)phosphoranes; where the non-cyclic substituent at phosphorus is a catechol residue the phosphoranes are readily transformed by organic bases into corresponding tris-(o-aryl-enedioxy)phosphate anions.