## Abstract The thermodynamic products (ε‐lactams) of the degradation of ten different spirocyclic oxaziridines were analyzed by ^1^H and ^13^C NMR spectroscopy. The preferred conformations were determined by examining the homonuclear spin–spin coupling constant and the chemical shift effects of th
Structure of methylenecyclopropane in a liquid crystal by 1H and 13C NMR
✍ Scribed by Taoufik Turku; Ezzeddine Haloui
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 216 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The ^1^H and ^13^C NMR spectra of methylenecyclopropane, both in the isotropic phase and in the Merck IV nematic phase, were analysed. The relative signs of the ^13^CH scalar coupling constants were determined. The complete geometry deduced from this study was compared with that from a microwave study, and the discrepancies are discussed.
📜 SIMILAR VOLUMES
Two series of 2,4,6-tris(amino)-s-triazines were studied by 1 H and 13 C NMR. 15 N NMR had previously demonstrated hindered rotation of the acyclic amino substituents (NHallyl, NHpropyl) around the Ar -N bonds at room temperature. In the present work, 1 H and 13 C NMR studies showed that rotation is
## Abstract The carbon–carbon connectivity of terreinol, a new metabolite isolated from __Aspergillus terreus__, and its previous ^13^C assignments were confirmed by a two‐dimensional INADEQUATE experiment using a few milligrams of the compound with natural ^13^C abundance. The carbon–carbon correl
NMR spectra of bimakalin and its photodimer were analysed with 1D and 2D techniques. 1H and 13C data were assigned and are reported. The structure of the dimer and the stereochemistry of the cyclobutane ring were determined.