Abstract
When phosphorothioates had the CH3-O-P linkage, they reacted with pyridine and consequently the linkage was cut off. Phosphorothioates having other alkyl-O-P linkages did not react with pyridine in the same condition as the above. Namely, O, O-dimethyl phosphorochloridothioate reacted with pyridine and produced mainly methylchloride and an oily product whose experimental formula is (CH3O) PSO-N+C5H5, and one mole ratio of O, O-dimethyl-O-(4-nitrophenyl) phosphorothioate also reacted with two moles ratio of pyridine and produced di-(N-methyl pyridinium) salt of O-(4-nitrophenyl) phosphorothioic acid.
