On the reaction of chlorodithiophosphoric acid pyridiniumbetaine with diphenylthiourea

摘要

Chlorodithiophosphoric acid pyridiniumbetaine, PyPS_2Cl (I), reacts with diphenylthiourea (PhNH)_2CS in acetonitrile and in the presence of triethylamine to the pyridinium salt of 1,3-diphenyl-4-mercapto-2,4-dithioxo-1,3-diaza-4#lambda#~5 -phosphetidine (II). The pyridinium salt of 1,3-diphenyl-2,4-dimercapto-2,4-dithioxo-1,3-diaza-2, 4#lambda#~5-diphosphetidine (III) is formed after longer reaction times. Compound II reacts easily with methyl iodide to corresponding methylderivative IV. All new prepared compounds were characterised by ~(31)P-NMR and FT-IR spectroscopies. The crystal structures of II, III and IV were determined by X-ray diffraction.