## Abstract The positions of conformational equilibria in a variety of 5,5‐disubstituted 1,3‐dioxans have been established by low‐temperature ^1^H and ^13^C NMR spectroscopy and by reference to the NMR spectra of anancomeric 2,5,5‐trisubstituted derivatives.
NMR spectra and stereochemistry of some 2,3,4,5-tetrasubstituted pyrrolidines
✍ Scribed by B. Mikhova; S.L. Spassov; K. Popandova; V. Dryanska; C. Ivanov; H. Duddeck; M. Kaiser
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 352 KB
- Volume
- 161
- Category
- Article
- ISSN
- 0022-2860
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## Abstract Thirty 3‐substituted‐ and 3,4‐disubstituted‐4,5‐dihydro‐1,2,4‐triazol‐5‐ones (seven being new compounds) were synthesized and their proton magnetic resonance spectra were measured in trifluoroacetic acid (TFA). The protonation shifts observed on comparison of the spectra run in DMSO‐__d