ABSTRACT A combination of Et3N and p TSCl was found to be far superior than p TSCl or benzene sulfonyl chloride alone in converting substituted 2-picoline-N-oxides to the corresponding 2-chloromethylpyridines and has been exploited for the synthesis of a variety of 2-[2-(pyridylmethyl)-thio]-1H-benzimidazoles, key intermediates in the manufacture of H+/K+-ATPase inhibitors in a single pot.
