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Compounds with bridgehead nitrogen. 56—The 1H NMR spectra and stereochemistry of some perhydrooxazolo[3,4-a]quinolines and 3,3a,4,5-tetrahydro-1H-oxazolo[3,4-a]quinolines

✍ Scribed by Trevor A. Crabb; Geoffrey C. Heywood

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 414 KB
Volume: 26
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260260616

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✦ Synopsis

The configurations and preferred conformations of some perhydrooxazolo[3,4-alquinolines and of the related 3,3a,4,5-tetrahydro-1H-oxazolo[3,4-u]quinolines have been assigned on the basis of their 'H NMR spectra. Comparison of the spectra of the two sets of compounds shows the effect of replacement of the alicyclic ring in the fully reduced compounds by the aromatic ring in the 3,3a,4,5tetrahydro-lH-oxazolo[3,4-u]quinolines on the 'H NMR parameters of the NCH,O protons.

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