Abstract
Cyclodehydration of N′-aroylbenzohydrazides in thionyl chloride gave 2-(2-hydroxyphenyl)-5-(3,4,5-trimethoxyphenyl)-1,3,4-oxadiazole and its 2-(2-methoxyphenyl) analog. Acetylation and tosylation of 2-(2-hydroxyphenyl)-5-(3,4,5-trimethoxyphenyl)-1,3,4-oxadiazole afforded 2-acetoxyphenyl and 2-tosyloxyphenyl derivatives. 2-[2-Methoxy(acetoxy, tosyloxy)phenyl]-5-(3,4,5-trimethoxyphenyl)-1,3,4-oxadiazoles showed strong luminescence (φ 0.22–0.99) in the blue–volet region with the emission maximum in the range λ 364–453 nm. The effect of solvent polarity on the absorption and emission spectra of these compounds was studied.
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This study was performed under financial support by the Ministry of Science and Higher Education of the Russian Federation in the framework of state assignment in the sphere of research activity (project no. 0852-2020-0031).
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Translated from Zhurnal Organicheskoi Khimii, 2022, Vol. 58, No. 10, pp. 1108–1113 https://doi.org/10.31857/S0514749222100093.
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Mikhailov, I.E., Vikrishchuk, N.I., Popov, L.D. et al. Luminescence Spectral Properties of 2-[2-Methyl(Acetyl, Tosyl)oxyphenyl]-5-(3,4,5-trimethoxy-phenyl)-1,3,4-oxadiazoles. Russ J Org Chem 58, 1542–1546 (2022). https://doi.org/10.1134/S1070428022100232
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DOI: https://doi.org/10.1134/S1070428022100232