Unexpected photochemical transformation of imidazole derivatives containing the 5-hydroxy-2-methyl-4H-pyran-4-one moiety. Environmentally friendly method for the synthesis of substituted imidazo[1, 5-a]pyridine-5, 8-diones. Issue 39 (26th September 2019)

• Record Type: Journal Article
• Authors: Melekhina, Valeriya G.; Komogortsev, Andrey N.; Lichitsky, Boris V.; Mityanov, Vitaly S.; Fakhrutdinov, Artem N.; Dudinov, Arkadii A.; Migulin, Vasily A.; Nelyubina, Yulia V.; Melnikova, Elizaveta K.; Krayushkin, Michail M.
• Is Part Of: Tetrahedron letters. Volume 60:Issue 39(2019)
• Publication Date: 2019-09-26
• Subjects: Photochemical transformation -- Allomaltol -- Trisubstituted imidazoles -- Imidazo[1, 5-a]pyridine-5, 8-diones; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tetlet.2019.151080
• Languages: English
• ISSNs: 0040-4039

Abstract

Graphical abstract: Highlights: Unexpected photochemical transformation of imidazole derivatives. Environmentally friendly photochemical method. Two steps synthesis of previously unknown imidazo[1, 5- a ]pyridine-5, 8-dione derivatives. Abstract: An unexpected photochemical transformation of imidazole derivatives containing the 5-hydroxy-2-methyl-4 H -pyran-4-one moiety was discovered, which led to the synthesis of previously unknown imidazo[1, 5- a ]pyridine-5, 8-dione derivatives. The structures of imidazole and imidazo[1, 5- a ]pyridine-5, 8-dione derivatives were unambiguously determined by X-ray diffraction analysis.