METHOD OF PREPARING DIESTERS OF PHOSPHONECARBOXYLIC ACID DERIVATIVES

摘要

FIELD: elementorganic synthesis. SUBSTANCE: title diesters having general formula I: (I) are prepared by interaction of phosphites having general formula II: (II) with ethylenically unsaturated compound X-CH=CH-Y where R and R are phenyl or C1-4-alkyl each optionally substituted by one or several chlorine or bromine atoms, X is hydrogen or methyl, Y groups COOR1, -CONH2, -CONHR1, CONR1@2 or -CN, in presence of basic catalyst with general formula MOR , in which M is alkali metal and R unsubstituted alkyl, in particular, methyl or ethyl, and bivalent metal halide, oxide, or hydroxide. EFFECT: reduced necessity of high-basicity catalysts. 7 cl, 2 tbl, 12 ex