REACTIVE PHOSPHONATES Russian patent published in 2013 - IPC C07F9/38 

FIELD: chemistry.

SUBSTANCE: invention relates to phosphonate compounds that are suitable as intermediate products when producing dispersants, water treatment agents, scale inhibitors, medicinal agents and detergents, secondary oil recovery agents, fertilisers and micronutrients, having formula: Y-X-N(W) (ZPO₃M₂), where Y is selected from Cl, I and Br; X is [A-O]_x-A, A is a C₂-C₉ hydrocarbon chain, x equals 1; Z is C₁-C₃ alkylene; M is selected from H and C₁-C₆ hydrocarbon chains; W is ZPO₃M₂; as well as novel methods for production thereof. Said compounds are obtained in an aqueous medium with pH≤6 by reacting a compound of formula halogen--X-NH₂, where halogen denotes Cl, Br or I, with phosphorous acid and formaldehyde at 90°-120°C, or by reacting a compound of formula HO-X-N(ZPO₃M₂)₂ at 110°-150°C with an acid selected from hydrochloric acid, hydrobromic acid and hydroiodic acid, under the condition that hydroiodic acid is not used if X contains ether bonds, where X, Z and M assume values given above.

EFFECT: obtaining novel compounds that are useful for synthesis of optimised structures which meet certain technical requirements.

8 cl, 6 ex, 1 tbl