Process for preparing heterocycles

Details Process for preparing heterocycles Process for preparing heterocycles

2000-01-28

2000-11-28

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544242, 544316, 544318, 544330, 544332, 548243, 548247, 548248, 5483741, 5483751, C07D23926, C07D23112, C07D26118, C07D26112

Patent

active

061537527

ABSTRACT:
Process for the preparation of heterocycles by reacting 2-substituted acetals of malondialdehyde with a reactant selected from hydroxylamines and their salts, hydrazines and their salts, formamid, amidines and their salts, guanidines and their salts, aminoguanidines and their salts, nitroguanidine and their salts, O-alkyl-isoureas and their salts, O-cycloalkyl-isoureas and their salts, O-aralkyl-isoureas and their salts, O-aryl-isoureas and their salts, S-alkyl-isothioureas, S-cycloalkyl-isothioureas, S-aralkyl-isothioureas, S-arylisothioureas, S-alkyl-isothiouronium salts, S-cycloalkyl-isothiouronium salts, S-aralkyl-isothiouronium salts, S-aryl-isothiuronium salts, thiourea and urea.

REFERENCES:
patent: 4808595 (1989-02-01), Hoffman

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