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2,3,5,6-Tetramethylmorpholine: II—1H n.m.r. structural studies of the isomers of 2,3,5,6-tetramethylmorpholine

✍ Scribed by Sven Hernestam; Bertil Nilsson

Publisher: John Wiley and Sons
Year: 1976
Tongue: English
Weight: 478 KB
Volume: 8
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270081111

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✦ Synopsis

Abstract

The structures of the six isomers of 2,3,5,6‐tetramethyl‐morpholine have been determined by means of proton nuclear magnetic resonance studies at 100 MHz. The spectra have been analysed in terms of spin–spin coupling constants and population distributions of the possible conformers at low temperatures. Also included in this paper are results from n.m.r. studies on the six 4‐benzyl‐2,3,5,6‐tetramethylmorpholine derivatives, which give information about the stereochemistry of the methyl groups α to the amine group.

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