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Abstract
Alkylene (dialkyl) dithiophosphate derivatives of thionyl chloride of the general formula 
(S)SS(O)Cl and (RO)2(S)SS(O)Cl where G = ─ CH2(CH3)2CCH2─, ─ CH2CH2CH(CH3)─, ─ C(CH3)2CH2CH(CH3)─ and R = i-C3H7, have been synthesized by reacting thionyl chloride with alkylene/dialkyl dithiophosphates in a 1:1 molar ratio in refluxing benzene. A similar reaction in a 1:2 molar ratio yields the corresponding products of the type (S2)2S═O and [(RO))2PS2]2S═O. It is interesting to note here that the sulfur atom of the thionyl chloride has been retained in the product, which is evidenced by sulfur analysis. The products thus obtained are light yellow colored semi solid (1:1 products) and orange colored liquids (1:2 products); and are soluble in common organic solvents. These new compounds have been characterized by elemental analysis, molecular weight measurements, and spectroscopic [IR and NMR (1H and 31P)] studies. These compounds are found to be biologically active against bacteria S.aureus and E.coli.