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Internal rotation about the N-aryl bond in ortho-disubstituted anilines and anilinium ions

✍ Scribed by Albrecht Mannschreck; Helmut Muensch


Book ID
104222722
Publisher
Elsevier Science
Year
1968
Tongue
French
Weight
280 KB
Volume
9
Category
Article
ISSN
0040-4039

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📜 SIMILAR VOLUMES


Internal rotation about the CN bond in
✍ Albrecht Mannschreck; Ulrich Koelle 📂 Article 📅 1967 🏛 Elsevier Science 🌐 French ⚖ 197 KB

Resonance structures & and 2 must be considered for the ground state of enamines \*I. Hindrance of free rotation about the C-N bond is dependent upon the contribution of 8. The kinetics of this process have been studied for -c< -/Me

Applications of NMR spectroscopy of chir
✍ Miroslav Holík; Albrecht Mannschreck 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 563 KB

For the investigation of the barrier to rotation about the C(sp2)-C(aryl) bond in non-planar pivalophenones five derivatives were prepared and their 'H and 13C NMR spectra assigned. Methyl and bromine groups in the 3-position have opposite substituent effects on the chemical shifts of the 'H and "C

Application of NMR spectroscopy of chira
✍ Miroslav Holik; Albrecht Mannschreck 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 554 KB

## Abstract The barrier to rotation about the C(sp^2^)C(aryl) single bond in non‐planar benzoyl compounds was investigated using __N__,__N__‐dimethyl, __N__,__N__‐tetramethylene and __N__,__N__‐diisopropyl derivatives of 2,4,6‐trimethylbenzamide and 2,6‐dimethoxybenzamide and __N__,__N__‐dimethyl