Enantiopure Δ2-pyrazolines and Δ2-1,2,4-triazolines fused to the 1,4-benzodiazepine moiety, as well as Δ2-pyrazolines annulated to the 1,5-benzoxazocine moiety (racemic) or inserted in a bis-1,3-pyrazolophane skeleton (enantiopure) were investigated through 15N NMR spectroscopy in natural abundance. Nitrogen chemical shifts were determined by (1D)-INEPT experiments, while proton-nitrogen scalar coupling were obtained through 2D-J-HMBC experiments.
15N NMR Spectroscopy of Annulated Δ2- Pyrazolines and Δ2-1,2,4-Triazolines / T. Recca, L. De Benassuti, G. Molteni. - In: HETEROCYCLES. - ISSN 0385-5414. - 81:2(2010), pp. 407-412. [10.3987/COM-09-11849]
15N NMR Spectroscopy of Annulated Δ2- Pyrazolines and Δ2-1,2,4-Triazolines
T. Recca;L. De Benassuti;G. Molteni
2010
Abstract
Enantiopure Δ2-pyrazolines and Δ2-1,2,4-triazolines fused to the 1,4-benzodiazepine moiety, as well as Δ2-pyrazolines annulated to the 1,5-benzoxazocine moiety (racemic) or inserted in a bis-1,3-pyrazolophane skeleton (enantiopure) were investigated through 15N NMR spectroscopy in natural abundance. Nitrogen chemical shifts were determined by (1D)-INEPT experiments, while proton-nitrogen scalar coupling were obtained through 2D-J-HMBC experiments.
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