FORFARANDE FOR FRAMSTELLNING AV 5-(CYANO ELLER KARBAMYL)-(3,4-BIPYRIDIN)-6(1H)-ON

Amrinone intermediates are prepared by reacting 4-picoline with at least three mole equivalents of phosgene per mole of 4-picoline and excess dimethylformamide to produce N-[3-dimethylamino-2-(4-pyridinyl)-2-propenylidene]-N-methylmethaniminium chloride hydrochloride, then reacting the latter with Q...

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Bibliographic Details
Main Authors C J OPALKA JR, K O GELOTTE
Format Patent
LanguageSwedish
Published 14.12.1987
Edition4
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary:Amrinone intermediates are prepared by reacting 4-picoline with at least three mole equivalents of phosgene per mole of 4-picoline and excess dimethylformamide to produce N-[3-dimethylamino-2-(4-pyridinyl)-2-propenylidene]-N-methylmethaniminium chloride hydrochloride, then reacting the latter with Q-CH2CONH2 and at least three mole equivalents of base in anhydrous medium and then neutralizing the reaction mixture to produce 5-Q-[3,4'-bipyridin]-6(1H)-one, where Q is cyano or carbamyl. Other aspects of the invention are the separate steps of preparing said iminium salt and then converting it to said 5-Q-[3,4'-bipyridin]-6(1H)-one, and also cardiotonic composition and method for increasing cardiac contractility using said iminium salt or pharmaceutically-acceptable acid-addition salt thereof as the active cardiotonic.
Bibliography:Application Number: SE19840002727