作者:Martha S. Morales-Ríos、M. Alvina Bucio、Pedro Joseph-Nathan
DOI:10.1002/mrc.1260311015
日期:1993.10
The 1HNMR spectra of E/Z 2‐hydroxyindolenines are reported in both CDCl3 and DMSO‐d6 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 13C NMR spectra for the Z‐hydroxyindolenines are also described. Substituent effects on E/Z isomerism about the exocyclic