Selective multicomponent 'one-pot' approach to the new 5-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)chromeno[2,3-b]pyridine scaffold in pyridine–ethanol catalyst/solvent system. - Elinson, Michail N.; Vereshchagin, Anatoly N.; Anisina, Yuliya E.; Krymov, Stepan K.; Fakhrutdinov, Artem N.; Egorov, Mikhail P. (Chemical Monthly / Monatshefte für Chemie, 2019)