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BERENGUER BENEYTO LAB
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BERENGUER BENEYTO LAB
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Application filed by BERENGUER BENEYTO LABfiledCriticalBERENGUER BENEYTO LAB
Priority to ES538438ApriorityCriticalpatent/ES538438A0/en
Publication of ES8600753A1publicationCriticalpatent/ES8600753A1/en
Publication of ES538438A0publicationCriticalpatent/ES538438A0/en
3-cyano 6-methyl 5-(4-pyridinyl) 2-(1H)-pyridinone and its addn. salts with organic or inorganic salts or bases is made by a condensn. and cyclisation reaction of 4-pyridinyl-methyl methyl ketone with ethoxymethylene malonitrile. Reaction is carried out in a polar inert organic solvent such as a 1-5C aliphatic alcohol at reflux temp. for 6h. When complete, the prod. is filtered off and purified by re-crystallisation.
ES538438A1984-12-101984-12-10
PROCEDURE FOR THE PREPARATION OF 1,2-DIHIDRO-3-CIANO-6-METHYL-5- (4-PIRIDINIL) -2- (1H) -PIRIDINE
GrantedES538438A0
(en)