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13 C NMR data for chlorine‐ or nitro‐substituted azomethine dyes
Author(s) -
Haessner Rainer,
Hennig Lothar,
Gaca Jerzy
Publication year - 1990
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.1260280915
Subject(s) - chemistry , moiety , ring (chemistry) , nitro , carbon 13 nmr , pyrazoline , chlorine , aryl , medicinal chemistry , chlorine atom , nmr spectra database , proton nmr , carbon atom , chemical shift , stereochemistry , spectral line , organic chemistry , alkyl , physics , astronomy
The 13 C NMR spectra of 1‐aryl‐substituted 3‐methyl‐2‐pyrazolin‐5‐ones and their azomethine dyes have been recorded and assigned. ortho ‐Substituents (Cl and NO 2 ) on the phenyl ring in the 1‐position of the pyrazoline moiety show a small influence on the chemical shift of the azomethine bond carbon atom, C‐4.