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1 H and 13 C NMR studies of E/Z 2‐hydroxyindolenines
Author(s) -
MoralesRíos Martha S.,
Bucio M. Alvina,
JosephNathan Pedro
Publication year - 1993
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.1260311015
Subject(s) - chemistry , planarity testing , substituent , nmr spectra database , ring (chemistry) , crystallography , carbon 13 nmr satellite , spectral line , carbon 13 nmr , stereochemistry , nuclear magnetic resonance spectroscopy , chemical shift , fluorine 19 nmr , organic chemistry , physics , astronomy
The 1 H NMR spectra of E/Z 2‐hydroxyindolenines are reported in both CDCl 3 and DMSO‐d 6 solvents. The data suggest a preferred conformation of the heterocyclic ring, which is slightly distorted from planarity, in agreement with the x‐ray crystallographic data of one of the isomers. The 13 C NMR spectra for the Z‐hydroxyindolenines are also described. Substituent effects on E/Z isomerism about the exocyclic CC bond are discussed.