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Digitale Medien

PMR studies of N-substituted-2,5-dimethyl-4-piperidones (1970)

Hassan, M. M. A. ; Casy, A. F.

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 2 (1970), S. 197-208

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Details

ISSN: 0030-4921

Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: PMR characteristics of some isomeric 1-substituted-2,5-dimethyl-4-piperidones are reported and major isomers shown to have a trans 2,5-dimethyl configuration. Differences between benzylic methylene signals of isomeric 1-benzyl analogs provide evidence of the preferred conformation of the cis derivative. Evidence of the D/H exchange of α-protons in 1,2,5-trimethyl-4-piperidone base and of addition of D2O to the carbonyl group of the corresponding hydrochloride and methiodide salts is also demonstrated. The effect of a 2-methyl substituent upon the chemical shifts of N-methyl groups in some piperidine methiodides is discussed.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/mrc.1270020213

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