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Unusual carbonyl carbon chemical shifts in the 13C nuclear magnetic resonance spectra of cyclic ketones

✍ Scribed by Peter Yates; Hillar Auksi; J. A. Gosbee; G. E. Langford; F. N. Maclachlan

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
217 KB
Volume
14
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The Ketonic ^13^C NMR signals of a series of 6‐hydroxy‐5‐oxobicyclo[2.2.2]oct‐7‐ene‐2‐carboxylic acid lactones and of haplophytine and related N‐substituted 3‐piperidinones occur at exceptionally high field; the structural factors which are responsible have been elucidated by comparisons with related compounds.

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