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NOVEL METHOD FOR PRODUCING BIS-PYRAZOLYLMETHANE, BIS-ISOXAZOLYLMETHANE AND 4,7-DIHYDRO-1H-PYRAZOLO3,4-BPYRIDINE BY SPLITTING 1,4-DIHYDROPYRIDINE RING WITH HYDRAZINE OR HYDROXYLAMINE
NOVEL METHOD FOR PRODUCING BIS-PYRAZOLYLMETHANE, BIS-ISOXAZOLYLMETHANE AND 4,7-DIHYDRO-1H-PYRAZOLO3,4-BPYRIDINE BY SPLITTING 1,4-DIHYDROPYRIDINE RING WITH HYDRAZINE OR HYDROXYLAMINE
Invention pertains to a new method for producing novel chemical compounds. The method is based on new chemical reaction where by one-stage synthesis pirazole derivatives can be obtained from substituted 1,4-dihydropyridines. Raw materials are well known and easy available. The synthesised pyrazoles can not be obtained by other methods. The final products are non-toxic and therefor can be used in research in pharmacology, analytical chemistry etc.
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