## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
The origin of rotational barriers in amides and esters
β Scribed by Joel F. Liebman; A. Greenberg
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 373 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0301-4622
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π SIMILAR VOLUMES
The trans conformations of methyl, ethyl and isopropyl formate were shown to be present in equilibrium in a polar solvent with the cis conformations to significant (> 1% at 230K) but much lower extents than for t-butyl fox-mate; rotational barriers for the former compounds are greater. Extensive in
Although the rotational isomerism in halogenated derivatives of ethanes, ketones and esters has been intensively studied by infrared spectroscopy 1,2,3 , we believe that no previous report on the aryloxyl alkyl esters or amides has been presented. We have prepared various compounds with the Structur
The spin-coupled method has been applied to the study of the rotational barriers of dimethylacetamide and of 1-acetyl-1,3,3-trimethylurea-a model compound for polyisocyanates. A significant amount of nitrogen lone-pair stabilization, achieved by delocalization toward the neighboring carbonyls, is sh