𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the origin of the magnetic non-equivalence of geminal NCH2 protons in thiobenzamides

✍ Scribed by Adrian O. Fulea; Peter J. Krueger

Publisher
Elsevier Science
Year
1975
Tongue
French
Weight
309 KB
Volume
16
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

The problem of the magnetic non-equivalence of geminal groups was dealt with extensively in the last decade.2a-g However, unambiguous information about the exact contribution of the con.

formatfonal and intrinsic asymmetry factors to ARAB is virtually non-existent.3

πŸ“œ SIMILAR VOLUMES

Magnetic non-equivalence in N,N-diethylb
Magnetic non-equivalence in N,N-diethylbenzamides and -thiobenzamides conformation of the N-alkyl groups
✍ Ulf Berg; Jan SandstrΓΆm πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 French βš– 238 KB

Two different rationalizations of magnetic non-equivalence of geminal methylene protons in ortho substituted N,N-diethylbenzamides and related compounds have been advanced. Bedford et ',';;T -\* and more recently Fulea and Krueger' advocate a "conformational effect", whereas Siddall and Garner3 and

Conformationally dependent influence of
Conformationally dependent influence of 3-substituents on the observable magnetic non-equivalence of benzylic methylene protons in N-benzylpiperidines
✍ M. A. Iorio; A. F. Casy πŸ“‚ Article πŸ“… 1975 πŸ› John Wiley and Sons 🌐 English βš– 388 KB

## Abstract Examples are given of the conformationally dependent influence of 3‐substituents (methyl, __n__‐propyl, allyl, aryl, hydroxy and acyloxy) on the magnetic non‐equivalence of the benzylic methylene protons (N__CH__~2~Ph) of __N__‐benzylpiperidine as observable by ^1^H NMR. The results, to