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Reactions of 5-arylimino-4-chloro-5H-1,2,3-dithiazoles with stable phosphoranes: Novel preparation of dithiomethylenephosphoranes

✍ Scribed by Hyi-Seung Lee; Kyongtae Kim


Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
191 KB
Volume
37
Category
Article
ISSN
0040-4039

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πŸ“œ SIMILAR VOLUMES


Synthesis of azomethylene derivatives of
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## 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.

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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)