Determination of the structure of 7-diethylamino-4-(1,2,3-triazol-1-yl)-2H-1-benzopyran-2-one derivatives using two-dimensional heteronuclear chemical-shift correlated NMR techniques |
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Authors: | N N Sveshnikov M A Kirpichenok |
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Institution: | (1) Institute of Chemical Physics in Chernogolovka, Russian Academy of Sciences, Chernogolovka, 142432 Moscow Region, Russian Federation;(2) K. A. Timiryazev Moscow Agricultural Academy, 127550 Moscow, Russian Federation |
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Abstract: | 1H and13C NMR spectra of 7-diethylamino-4-(1,2,3-triazol-1-yl)-2H-1-benzopyran-2-one derivatives have been studied. The location of the substituent in the 1,2,3-triazole ring was determined by the 2D COLOC method. It was established that the H(3) and H(5) protons in the coumarin moiety experience anisotropic influence of the phenyl subsituent at the C(5 ) atom in the triazole ring.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1330–1332, July, 1994. |
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Keywords: | 7-diethylamino-4-(1 2 3-triazol-1-yl)-2H-1-benzopyran-2-ones 1H 13C NMR two-dimensional NMR COLOC method |
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