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Studies in tertiary amine oxides part II —carbon‐13 nuclear magnetic resonance spectra of selected acetylenic amines, their N ‐oxides and the Meisenheimer rearrangement products
Author(s) -
AlIraqi Mohammed A.,
AlRawi Jasim M. A.,
Khuthier AbdulHussain
Publication year - 1980
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270140303
Subject(s) - chemistry , chemical shift , moiety , ring (chemistry) , molecule , nitrogen , carbon fibers , amine gas treating , spectral line , nmr spectra database , carbon 13 nmr , photochemistry , medicinal chemistry , organic chemistry , materials science , physics , astronomy , composite number , composite material
Carbon‐13 NMR chemical shifts and 1 J (CH), 2 J (CH) and 3 J (CH) coupling constants of selected saturated nitrogen heterocyclic molecules containing the acetylenic moiety have been determined. These NMR parameters have also been determined for the corresponding N ‐oxides and the Meisenheimer rearrangement products, the O‐allenylhydroxylamines. The effect of the N ‐oxidation on the chemical shifts of the ring and the acetylenic carbon atoms is discussed.