## Abstract Octahydroimidazo[1,5‐__a__]pyridine is shown to preferentially adopt the __trans__‐fused ring conformation in solution at room temperature. The NMR spectra of the rotational isomers of some __N__‐acetyloctahydroimidazo[1,5‐__a__]pyridines and __N__‐acetyloctahydro‐1H‐pyrido[1,2‐__c__]py
Polymerization of 1,1,1-trifluoroacetone with aliphatic secondary amines. A proton and fluorine magnetic resonance investigation
✍ Scribed by M. M. Dhingra; K. R. Tatta
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 528 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The polymerization of 1,1,1‐trifluoroacetone with aliphatic secondary amines is reported. The polymerization product is found to be a mixture of four diastereoisomers of the cyclic trimer, the structure of which has been determined using proton and fluorine magnetic resonance spectroscopy. The proportions of the isomers have been estimated to be 70:19:8:3 from the ^19^F resonance spectrum. A comparative study of the reaction products of trifluoroacetone with metallic sodium and diethylamine is also discussed.
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