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Carbon-13 nuclear magnetic resonance spectra: III—2-heteroadamantanes

✍ Scribed by Helmut Duddeck; Peter Wolff

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
821 KB
Volume
8
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The ^13^C n.m.r. spectra of some 2‐heteroadamantanes and 1‐substituted 2‐heteroadamantanes are reported. The influences of the heteroatoms in the adamantane framework, and those of the substituents attached to it, on the ^13^C chemical shifts of the adamantane carbons are investigated and compared with related compounds such as the corresponding heterocyclohexane derivatives and 2‐mono‐ and 2,2‐disubstituted adamantanes. The nonadditivity of the substituent effects for 1‐substituted 2‐heteroadamantanes, especially for the geminally substituted carbons, is substantially confirmed. In addition, the influences of a missing CH~2~ group and of NCH~3~ carbons upon the ^13^C chemical shifts of the carbons in the adamantane system are described.

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