B. V. Paponov, Danil A. Rakityansky, Marina S. Samokhvalova
May 1, 2021
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Journal
Mendeleev Communications
Abstract
New 3-acylamino-7-hydroxy-5-methyl-2-oxo-2H-pyrano[2,3-b]pyridine-6-carbonitriles were synthesized via a tricomponent condensation of 3-cyano-4-methyl-1,2,5,6-tetrahydropyridine-2,6-dione, triethyl orthoformate and N-acylglycines under the Erlenmeyer–Plochl reaction conditions. According to X-ray data, in the solid phase they exist as hydroxypyridine tautomer form.