## Abstract Seven new substituted 5‐phenoxy‐1,2,4‐dithiazole‐3‐ones were prepared in modest yield (53–76%) from corresponding __O__‐phenyl thiocarbamates and chlorocarbonylsulfenyl chloride in dry ether at −10 °C. All of the compounds were characterized by NMR and elemental analysis and some of the
Synthesis and properties of 4-substituted 5H-1,2,3-dithiazol-5-ylidenes
✍ Scribed by V. V. Popov; O. I. Bol’shakov; L. S. Konstantinova; O. A. Rakitin
- Publisher
- Springer
- Year
- 2009
- Tongue
- English
- Weight
- 314 KB
- Volume
- 58
- Category
- Article
- ISSN
- 1573-9171
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A variety of 5-alkylidene-4-chloro-5H-I,2,3-dithiazoles (9-25) have been prepared from 4chloro-5H-l,2,3-dithiazolium chloride, active methylene compounds, and pyridine. The reactions with ethyl nitroacetate ((Z) > (E)), ethyl 3-nitrobenzoylacetate ((E) > (Z)), ethyl 2-fluorobenzoylacetate ((E) > (Z)
## Abstract Previously unknown azomethylene derivatives of 4‐chloro‐5__H__‐1,2,3‐dithiazole 5–7 were synthesized by the reaction of the Appel salt 1 with __N__‐monosubstituted hydrazones 2–4. It was shown that they could be transformed into heterocyclic compounds 8–10.
-vlidene derivatives 1-3 with primary and secovdary alkylarmnes in CH,CL at room temperature gave 2,5-dzhydro-2-iminopyrroles (22-55%) and 2, 5-dihydro-2-imino[urans (18-62%). However, similar treatment of alltyl (4-chloro-5H-1,2,3dithtazol-5-ylidene)cyanoacetates under the same conditions gave (Z)-