6-METHYL-3,4-DIOXO-1-(4-METHOXYBENZYLIDENE)-FURO-[3,4-C]-PYRI- -DINE SHOWING STIMULATING ACTIVITY FOR AGRICULTURE CROP SEEDS GERMINATION Russian patent published in 1998 - IPC

FIELD: organic chemistry, agriculture. SUBSTANCE: invention relates to new biologically active chemical compound that activates germination of agriculture crop seeds, in part, rice and sunflower. Product: 6-methyl-3,4-dioxo-1-(4-methoxy- -benzylidene)-furo-[3,4-c] -pyridine, empirical formula is C₁₆H₁₃NO₄,. The yield is 80%, decomposition point is 318-320 C. Reagent 1: 6-methyl-3,4-dioxo-1(H)-furo-[3,4-c]-pyridine. Reagent 2: anise aldehyde. Reaction conditions: in the presence of piperidine, in medium of boiling C₂H₅OH for 5 h. Synthesized product is filtered off, filtrate is evaporated, residue is ground in hot water and identified. EFFECT: improved method of synthesis, enhanced effectiveness of compound. 2 tbl, 3 ex