Studies in Stereochemistry. XV. Effect of Configuration on Steric Inhibition of Resonance in Diastereomerically Related Compounds
β Scribed by Hawthorne, Fred; Cram, Donald J.
- Book ID
- 127382283
- Publisher
- American Chemical Society
- Year
- 1952
- Tongue
- English
- Weight
- 1000 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Rotational barriers of the dimethylamino group in different enamino aldehydes and ketones have been applied for evaluation of their conformation. It has been maintained that repulsion between bulky substituents causes twisting of the molecule rather than planar deformations. Arguments for and again
Geometries of secondary and tertiary benzylic cations, which have bulky substituents at a positions, were optimized by ab initw MO calculations at the RHF/6-31G\* and, in part, MP2/6-31G\* levels. Calculated #cu,r, which is the dihedral angle of the a-C -C bond with respect to the aromatic plane, is