Reaction of salicylamides with tetraphosphorus decasulfide and esterification of the reaction product

Abstract

Benzo-[5,6]-2,4-dithiono-2-mercapto-1,3,2-oxazaphosphorinane S-pyridinium salt and its derivatives have been synthesized by the reaction of tetraphosphorus decasulfide with salicylamides in 5:4 molar ratio in dry pyridine. By the further, ten new esters of dithiophosphoric acid have been synthesized by the pyridinium salt of dithiophosphoric acid with alkyl halides. These new compounds are expected to exhibit fungicidal activity. These compounds have been characterized by IR, NMR, and PMR spectroscopic studies.