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13 C NMR spectra of some 4‐substituted N ‐acetonyl ‐ N , N ‐dimethyl‐ N ‐phenacyl‐ammonium bromides
Author(s) -
Grandjean Jean,
Laszlo Pierre,
Canto Eduardo Leite Do,
Rittner Roberto
Publication year - 1989
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260271118
Subject(s) - chemistry , phenacyl , substituent , methylene , chemical shift , carbon 13 nmr , ring (chemistry) , ammonium , nmr spectra database , spectral line , medicinal chemistry , stereochemistry , computational chemistry , organic chemistry , physics , astronomy
The 13 C NMR signals for some 4‐substituted N ‐acetonyl‐ N , N ‐dimethyl‐ N ‐phenacylammonium bromides were assigned. The HETERCOSY and COLOC sequences allow an unambiguous distinction between the very similar signals of the methylene carbons. The chemical shifts observed for the aromatic ring carbons are in close agreement with those calculated from substituent increments.