Search

We demonstrate that the previously synthesized product of ethyl isothiocyanate insertion into tungsten hexachloride, WCl5{N(Et)C(S)N(Et)C(S)Cl}, whose partial hydrolysis yields {N(Et)C(S)-S-S-C=NH(Et)}[WOCl5] (I), can be used as a source of biologically active heterocyclic compounds. 1H and 13C NMR and gas chromatography-mass spectrometry data show that reaction of I with a saturated aqueous Na2CO3 solution yields a number of thiazolidine heterocycles, mostly 4-ethyl-5-ethylimino-[1,2,4]-dithiazolidin-3-trithione. The thermal Dimroth rearrangement leads to the formation of 2,4-diethyl-[1,2,4]-dithiazolidin-3,5-dithione and the products of partial hydrolysis of both heterocycles: 4-ethyl-5-ethylimino-[1,2,4]-dithiazolidin-3-on and 2,4-diethyl-3-thioxo-[1,2,4]-dithiazolidin-5-on.