Efficient Synthesis of 4,7-Dihydro-1H-oxepino[2,3-c]pyrazoles by Potassium Carbonate Promoted [4+3] Annulation of Crotonate-Derived Sulfur Ylides with Benzylidenepyrazolones
| Autor: | Zhiwei Miao, Xue Wang, Xuange Zhang, Dian Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Annulation Reaction mechanism Base (chemistry) 010405 organic chemistry Organic Chemistry chemistry.chemical_element 010402 general chemistry 01 natural sciences Sulfur Catalysis 0104 chemical sciences Potassium carbonate chemistry.chemical_compound chemistry Organic chemistry |
| Zdroj: | Synthesis. 51:2149-2156 |
| ISSN: | 1437-210X 0039-7881 |
| Popis: | The [4+3] annulation reaction of crotonate-derived sulfur ylides with benzylidenepyrazolones using K2CO3 as the base is reported. The ready availability of starting materials and the simple cyclization procedure make this approach suitable for the preparation of a diverse array of 4,7-dihydro-1H-oxepino[2,3-c]pyrazoles in good to excellent yields. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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