Synthese und Reaktivität von 4H-Dithieno[2,3-b: 3′,2′-e]-thiopyran-Derivaten
✍ Scribed by Ried, Walter ;Podkowik, Berndt-Ingo ;Oremek, Gerhard
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 166 KB
- Volume
- 1980
- Category
- Article
- ISSN
- 0947-3440
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✦ Synopsis
Abstract
4‐Hydroxy‐2‐thioxo‐2__H__‐thiopyran‐3,5‐dicarbonsäure‐diethylester^2)^ (1) reagiert mit 2a ‐ b zu den Substitutionsprodukten 3a‐b. Diese cyclisieren zu den 3,5‐Dihydroxy‐4‐oxo‐4H‐dithieno‐[2,3‐b: 3′,2′‐e]thiopyran‐2,6‐dicarbonsäure‐diethylestern 4a‐b, welche mit Säurehalogeniden die Acyl‐ und Arylderivate 6a‐d bilden.
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Inhaltsu È bersicht
Synthesis, Reactivity, and Ligand Properties of 1.4-Dihydro-1,4-diboranaphthalene and 2,3-Benzo-1.4-dihydro- ## 1. 4-diborafulvene Derivatives The chlorine derivative l a of 1,4-dihydro-1,4-diboranaphtha-The dimethyl derivatives 1 b and 2b react with the Fe(C0)3 lene and 2a of 2,3-benzo-1,4-dihydr