Reactions of 5-arylimino-4-chloro-5H-1,2,3-dithiazoles with stable phosphoranes: Novel preparation of dithiomethylenephosphoranes
β 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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## Abstract Previously unknown azomethylene derivatives of 4βchloroβ5__H__β1,2,3βdithiazole 5β7 were synthesized by the reaction of the Appel salt 1 with __N__βmonosubstituted hydrazones 2β4. It was shown that they could be transformed into heterocyclic compounds 8β10.
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)