Process for the production of imidazopyridines

A novel process for the preparation of imidazopyridines of the general formula wherein the radicals R1 to R4 have the meaning indicated in the description, is described. In the key step of the process an alkoxyimidate of the formula is cyclised with aminoacetonitrile and with a 1,3-dicarbonyl compou...

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Bibliographic Details
Main Authors STUCKY, GERHARD, IMWINKELRIED, RENE
Format Patent
LanguageEnglish
French
German
Published 05.02.1997
Edition6
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:A novel process for the preparation of imidazopyridines of the general formula wherein the radicals R1 to R4 have the meaning indicated in the description, is described. In the key step of the process an alkoxyimidate of the formula is cyclised with aminoacetonitrile and with a 1,3-dicarbonyl compound of the general formula The imidazopyridines are useful intermediates for the preparation of angiotensin II antagonists.
Bibliography:Application Number: EP19940114551