[EN] PYRIDINE AND RELATED LIGAND COMPOUNDS, FUNCTIONALIZED NANOPARTICULATE COMPOSITES AND METHODS OF PREPARATION [FR] COMPOSES PYRIDINE ET COMPOSES LIGANDS CONNEXES, COMPOSITES A NANOPARTICULES FONCTIONNALISES, ET PROCEDES D'ELABORATION
[EN] PYRIDINE AND RELATED LIGAND COMPOUNDS, FUNCTIONALIZED NANOPARTICULATE COMPOSITES AND METHODS OF PREPARATION<br/>[FR] COMPOSES PYRIDINE ET COMPOSES LIGANDS CONNEXES, COMPOSITES A NANOPARTICULES FONCTIONNALISES, ET PROCEDES D'ELABORATION
A chemoselective demethylation method for various methoxypyridine derivatives has been developed. Treatment of 4-methoxypyridine with L -selectride in THF for 2 h at reflux temperature afforded 4-hydroxypyridine in good yield; no reaction to anisole occurred. The utility of our method was demonstrated by the efficient synthesis of the metabolic substances of the antiulcer agent omeprazole. Chemoselective