Preparation of Alkyl Dihydrogenphosphates with Monomeric Metaphosphate Anion Generated by Photochemical C-P Bond Cleavage of p-Nitrobenzylphosphonic Acid

Article abstract of DOI:10.1246/bcsj.59.1505

Alkyl dihydrogenphosphates were prepared by a procedure that probably involves a monomeric metaphosphate anion as an intermediate.The monomeric metaphosphate anions used in this reaction were generated by a photochemical C-P bond cleavage of the p-nitrobenzylphosphonate dianion.The photolysis of a 1:2 molar mixture of p-nitrobenzylphosphonic acid and 1,8-diazabicyclo<5.4.0>undec-7-ene (or 2,2,6,6-tetramethylpiperidine) in excess alcohol gave alkyl dihydrogenphosphate in fairly good yield.