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13C Chemical shifts and conformational equilibria in quaternary piperidinium salts

✍ Scribed by Makiko Sugiura; Narao Takao

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
250 KB
Volume
20
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Carbon‐13 nuclear magnetic resonance spectra of a series of N‐methyl‐N‐alkylpiperidinium salts have been measured, and the observed chemical shifts analysed in terms of the stereochemical and conformational properties of the molecules. Furthermore, the differences of the free energy (Δ__G__°) between two conformers on ring inversion have been estimated.

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