## Abstract Several pyridazin‐3(2__H__)‐one derivatives were synthesized starting from alkyl furans using oxidation with singlet oxygen to give 4‐methoxy or 4‐hydroxybutenolides, key intermediates of the synthetic strategy followed. For all pyridazinones reported, a complete assignment of the ^1^H
Synthesis and complete 1H, 13C and 15N NMR assignment of substituted isoxazolo[3,4-d]pyridazin-7(6H)-ones
✍ Scribed by V. Dal Piaz; A. Graziano; N. Haider; W. Holzer
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 128 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1528
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The synthesis and complete assignment of all hydrogen, carbon and nitrogen NMR signals of several new isoxazolo[3,4‐d]pyridazin‐7(6__H__)‐ones is reported. The spectroscopic characterization is extended to previously described analogues. Copyright © 2004 John Wiley & Sons, Ltd.
📜 SIMILAR VOLUMES
## Abstract ^1^H, ^13^C and ^15^N NMR measurements (1D and 2D including ^1^H^15^N gs‐HMBC) have been carried out on 3‐amino‐1, 2,4‐benzotriazine and a series of __N__‐oxides and complete assignments established. __N__‐Oxidation at any position resulted in large upfield shifts of the corresponding
## Abstract ^1^H and ^13^C NMR data for 13 nitrohistidine derivatives are reported, providing a diagnostic method for the elucidation of the __N__^1^‐(**2**) and the __N__^3^‐substituted (**3**) regioisomers. Spectral assignments of constrained surrogates of His (**4**) and of the His–Gly dipeptide
The complete assignment of the 1H, 13C and 19F NMR spectra of eight Ñuoro-substituted 3H-naphthopyrans was achieved by the concerted application of homonuclear (1HÈ1H) and heteronuclear (13CÈ1H and 19FÈ1H) correlations.
## Abstract The complete assignment of ^1^H and ^13^C chemical shifts of natural abundance prenol‐10 is reported for the first time. It was achieved using 3D NMR experiments, which were based on random sampling of the evolution time space followed by multidimensional Fourier transform. This approac
## Abstract The proton and carbon spectra of new 2,4‐diaryl‐substituted cycloalkyl[__d__]pyrimidines prepared in a simple one‐pot reaction, are reported. Copyright © 2002 John Wiley & Sons, Ltd.