Cy. Yuan et al., STUDIES ON ORGANOPHOSPHORUS COMPOUNDS .75. A FACILE SYNTHESIS OF 1-(HYDROXYAMINO)ALKYL(OR ARYL)PHOSPHONIC ACIDS, Synthesis, (10), 1993, pp. 955-957
Reduction of dialkyl 1-(hydroxyimino)alkyl(aryl)phosphonate 1 with bor
ane-pyridine complex proceeds smoothly to give dialkyl 1-(hydroxyamino
)alkyl(or aryl)phosphonate 2 which is then easily converted into the c
orresponding hydroxyaminophosphonic acid 3 by acidic hydrolysis.