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Nitrogen-15 nuclear magnetic resonance spectroscopy. Natural abundance. Nitrogen-15 nuclear magnetic resonance spectra of enamines

✍ Scribed by Westerman, Philip W.; Roberts, John D.

Book ID: 126166461
Publisher: American Chemical Society
Year: 1977
Tongue: English
Weight: 541 KB
Volume: 42
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo00433a013

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## Abstract Nitrogen‐15 NMR spectra of 11 ketenimines have been taken both at the natural‐abundance level of ^15^N and with the aid of ^15^N‐labeling. The nitrogen chemical shifts are substantially different from those of neutral imines and are upfield, more like those of protonated imines. The res