Russian Chemical Bulletin

, Volume 43, Issue 7, pp 1270–1272

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


  • N. N. Sveshnikov
    • Institute of Chemical Physics in ChernogolovkaRussian Academy of Sciences
  • M. A. Kirpichenok
    • K. A. Timiryazev Moscow Agricultural Academy
Brief Communications

DOI: 10.1007/BF00698258

Cite this article as:
Sveshnikov, N.N. & Kirpichenok, M.A. Russ Chem Bull (1994) 43: 1270. doi:10.1007/BF00698258


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.

Key words

7-diethylamino-4-(1,2,3-triazol-1-yl)-2H-1-benzopyran-2-ones1H,13C NMR, two-dimensional NMR COLOC method

Copyright information

© Plenum Publishing Corporation 1995