HETEROCYCLIC DERIVATIVES OF ALKOXYACRYLATES AND PROCESS FOR PREPARATION THEREOF Russian patent published in 1996 - IPC

FIELD: chemistry of heterocyclic compounds having fungicidal activity. SUBSTANCE: product: heterocyclic derivatives of alkoxyacrylates of formula I wherein A, B and D are =CH- group; R₁ and R₂ are lower alkyl; R₃ and R₄ are H or together they form bond; W is H; Y is lower alkyl which may be substituted by lower alkoxyphenyl groups, dihalogenphenoxy groups or C₁-C₄-halogenated alkyl phenoxy groups; phenyl group which may be substituted by 1-2 halogen atoms, alkyl, halogenalkyl, phenyl, halogenalkoxy groups or thiophene group. Process for preparing compounds of formula 1 comprises reacting compound of formula 2 with compound of formula 3 in the presence of halogenating agent, reacting the resulting compound with alkylformate of formula 5: HCOOR₇ in bipolar protic or aprotic solvent in the presence of base at temperature of -10 C to 80 C to give salt of compound of formula 6 which reacts with alkylating agent R₂-X.. Structure of compounds of formulae 1,2,3,4,5 and 6: , , , . EFFECT: improved properties of the heterocyclic compounds. 7 tbl, 3 tbl