In connection with a study of the action of certain sulfur compounds as possible chemotherapeutic agents in the treatment of pneumonia, a series of derivatives of p- fluorophenyl sulfinic acid has been prepared. The sodium salt of p-fluorophenyl sulfinic acid was readiIy obtained from fluorobenzene by the synthesis of Knoevenagel and Kenner2 and proved to be a suitable material for the introduction of various substituents in the sulfinic ...