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Synthesis of azachromones and azachromanones

Chem. Heterocycl. Compd. 2019, 55 (11), 1007–1012

DOI: 10.1007/s10593-019-02570-x

Malets Y.; Moskvina V.; Grygorenko O.; Brovarets V.

This minireview highlights known methods for the synthesis of azachromones and azachromanones, including the earliest and the latest examples of their synthesis. Methods considered for constructing azachromone or azachromanone system include intramolecular heterocyclization, deprotection–cyclization, spirocyclization, cyclization–aromatization, Ullman-type O-arylation, and C–H activation of pyridine N-oxides.

Synthesis of azachromones and azachromanones

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