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Vicinal 13C13C spin–spin coupling constants of 1-butanols. Conformational and substituent effects

✍ Scribed by James L. Marshall; Shareen A. Conn; Michael Barfield

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
376 KB
Volume
9
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

A series of (>90% isotopic purity) ^13^C‐labeled aliphatic alcohols of the general structure CCC^13^COH were synthesized and studied by ^13^C n.m.r. to obtain all ^13^C^13^C couplings involving the labeled carbon. The ^2^J(CC) values were small (<0.5 Hz) and contrast with the large (up to 2.7 Hz) ^2^J(CC) values obtained in a previous study for 2‐butanols. The ^3^J(CC) values, however, were strikingly similar in the two classes of compounds with respect both to magnitude and to conformational dependency. Thus, the effect of the hydroxyl substituent on ^3^J(CC) values is small.

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