Conjugated 2,4,1- and 1,4,3-enynones as polycentricelectrophiles in synthesis of heterocyclic compounds
2019
This review article provides critical analysis of literature data regarding the heterocyclization reactions of compounds containing alk-2-en-4-yn-1-one and alk-1-en-4-yn-3-one moieties. We discuss the reactions leading to the formation of furans, 2,3-dihydropyrans, 1,2,3-triazoles, 4,5-dihydro-1Н-pyrazoles, pyrazoles, isoxazoles, pyrimidines, aziridines, as well as a range of more complex fused ringsystems. The biological activity and photophysical properties of the obtained heterocyclic compounds are described. The attention ismainly focused on the studies published during the last 5 years. A total of 87 references are given.
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