Pyridine is in high demand as an active component of agrochemicals. ... In reactions like the production of SOCl2 (thionyl chloride) and TsCl (p-toluenesulfonyl chloride), ...

THE catalytic effect of small amounts of pyridine in the reaction between thionyl chloride and carboxylic acids is well known; Carré and Libermann1 have shown further that it is of great ...