Synthesis of β-(о-hydroxybenzyl)pyridines by three-component condensation of ammonia, carbonyl-substituted 4Н-chromenes, and СН acidsстатья
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Дата последнего поиска статьи во внешних источниках: 3 октября 2019 г.
Аннотация:A series of pyridine derivatives containing a 2-hydroxybenzyl or (2-hydroxynaphthalen-1-yl)methyl substituent were obtained by treating carbonyl-substituted 4Н-chromenes and 1Н-benzo[f]chromenes with ammonia and 1,3-dicarbonyl compounds or aromatic ketones as a result of the carbo-Michael reaction, chromane ring opening, and cyclodehydration.