Dynamic 1H NMR study of the barrier to rotation about the C-N bond in primary carbamates and its solvent dependence
- The dynamic 1H NMR study of some primary carbamates in the solvents CDCl3 and CD3COCD3 between 183 and 298 K is reported. The free energies of activation, thus obtained (12.4 to 14.3 kcal mol-1), were attributed to the conformational isomerization about the N-C bond. These barriers to rotation show solvent dependence in contrast to the tertiary analogues and are lower in free energy by ca. 2-3 kcal mol-1.
| Author details: | Ali Reza Modarresi, Parisa Najafi, Mohsen Rostamizadeh, Hossein Keykha, Hamid-Reza Bijanzadeh, Erich KleinpeterORCiDGND |
|---|---|
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2007 |
| Publication year: | 2007 |
| Release date: | 2017/03/24 |
| Source: | Journal of organic chemistry. - 72 (2007), 6, S. 2208 - 2211 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| Peer review: | Nicht ermittelbar |
