FIELD: organophosphorus compounds. SUBSTANCE: product: derivatives of 2-formylbenzylphosphonic acid as a free acid or in the form of R1,, R2--di(similar or different)alkyl esters, or in the form of salt. Reagent 1: 2-formylbenzylhalide. Reagent 2: tri-R1, R2, R3--alkylphosphite. Reaction conditions: in the medium of organic solvent, at 100-250 C. EFFECT: improved method of synthesis. 4 tbl
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Authors
Dates
1995-07-09—Published
1990-12-20—Filed