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13C NMR: The stereochemical dependence of 15N13C coupling constants in pyrazoles

✍ Scribed by T. Axenrod; P. Mangiaracina; C. M. Watnick; M. J. Wieder; S. Bulusu

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
227 KB
Volume
13
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Geminal ^15^N^13^C coupling constants have been measured in a series of ^15^N‐enriched 1‒phenyl‒3,5‒dialkyl‐substituted pyrazoles. The importance of the orientation of the nitrogen lone‐pair in determining the magnitude of ^2^J(^15^N^13^C) values is reflected in the enhanced coupling observed for those carbon atoms lying close in space to the lone‐pair electrons.

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