| 摘要 |
FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for synthesis of compound of the formula (1): wherein Y means -O-, -S- or -N(R2)- wherein R2 means hydrogen atom, (C1-C10)-alkyl or aralkyl; Z means 2,5-furanyl, 2,5-thiophenyl, 4,4'-stilbenyl or 1,2-ethyleneyl residue; R1 means hydrogen or halogen atom, (C1-C10)-alkyl, (C1-C10)-alkoxy-group, cyano-group, -COOM or -SO3M wherein M means hydrogen atom or alkaline or alkaline-earth metal atom. Method for synthesis involves carrying out the reaction of compound of the formula (2): with dicarboxylic acid of the formula: HOOC-Z-COOH (3) or with it ester wherein Y, Z and R1 have values given above in N-methylpyrrolidone or N,N-dimethylacetamide medium in the presence of an acid catalyst and optionally in the presence of an accessory solvent able to remove water from the reaction mixture. ^ EFFECT: improved method of synthesis. ^ 11 cl, 7 ex |
