THE FACILE SYNTHESIS OF MACROCYCLIC LACTONES BY THE USE OF 2-CHLORO-3-METHOXYMETHYL-1-METHYLPYRIDINIUM IODIDE

Abstract
Long chain ω-hydroxycarboxylic acids cyclize to the corresponding lactones in good yields by the treatment with 2-chloro-3-methoxymethyl-1-methylpyridinium iodide (2) and triethylamine in refluxing methylene chloride.