An enantioselective synthesis of functionalized aza-flavanone derivatives using the N-
heterocyclic carbene-catalyzed intramolecular Stetter reaction of sulphoamido …

A systematized survey of reviews and monographs published in 2019 on all aspects of
heterocyclic chemistry is given. Methods for the synthesis, reactivity, and practically useful …

3-Acetoacetyl-4, 6-diaryl-2-pyridones are synthesized in three steps from chalcones and
then condense with carbon disulfide to afford 8-azachromones containing a methylthio …

A series of 2-(haloalkyl)-3-azidomethyl and 6-azido chromones has been synthetized,
characterized and studied by theoretical (DFT calculations) and spectroscopic methods (UV …

An approach to the preparation of hereto unknown parent 5-and 7-azachromones was
developed. The key step relied on the NaHmediated condensation of isomeric 2 (4)-acetyl-3 …

This microreview provides a comprehensive analysis of synthetic approaches to chromeno
[2, 3-c] pyrrol-9 (2 H)-ones, a promising class of compounds that incorporate chromene and …

On the base of 3-formylpicolinic acid by two successive heterocyclizations (the formation of a
pyrone fragment by the cyclization of chloroacetone with the carboxyl and formyl groups; …

An efficient and practical synthetic procedure for libraries of diversified 1, 2-
dihydrochromeno [2, 3-c] pyrrole-3, 9-diones using a multicomponent process is presented …

A series of 2, 2-disubstituted 8-azachromanones, including spirocyclic compounds, have
been synthesized via Horner–Wadsworth–Emmons reaction. Dimethyl methylphosphonate …

Flavonoids and their derivatives have historically been a source of therapeutic agents. Every
year, more and more data is published on new flavonoid compounds, both synthetic and …