METHOD OF PREPARING CORRESPONDING DERIVATIVES OF AZAMACROCYCLIC OR ACYCLIC AMINOPHOSPHONATES Russian patent published in 1999 - IPC

FIELD: chemical industry. SUBSTANCE: corresponding derivatives of azamacrocyclic or acyclic aminophosphonates which contain at least one secondary or primary nitrogen atom substituted by at least one fragment of formula: -CH₂PO₃RR¹ (I), wherein R is C_1-5 alkyl, hydrogen, Na or K are prepared by reacting corresponding unsubstituted amine with strialkyl phosphite and para-formaldehyde followed by aqueous alkaline hydrolysis to obtain derivatives substituted by fragment of formula I. Method makes it possible to prepare the desired compound with yield of at least 90%. EFFECT: more efficient preparation method. 34 cl, 18 ex