Trans-cis isomerization of 4-(2-(9-anthryl)vinyl)pyridine. Molecular structures and ~1H NMR kinetic studies

摘要

Both cis-and isomers of 4-(2-(9-anthryl)pyridine were isolated and their molecular structures established by X-ray crystallographic method. Variable temperature ~1H NMR spectroscopy was used to study the trans to cis isomerization for the title compound. The kinetic study of the reaction was based on the ra- tio of the NMR integration heights in toluene-d_8 of the double doublet due to the cis-isomer atδ8.51 to that of the multiplet atδ8.15 with was kept constant during the whole experiment.