Sodium thiosulfate reacts with alkyl halides to form esters of the type RSSOsNa, called Bunte salts. These S-alkyl thiosulfates have been used for preparing neutral mercaptans, 2 dis~ lfides,~ mercaptals4 and mercaptols. 6 This paper describes the use of Bunte salts for directly preparing dicarboxylic acids which are disulfides, mercaptals and mercaptols. Sodium thiosulfate and sodium chloroacetate formed disodium S-carboxymethyl ...
