Catalytic asymmetric [4 + 1] cycloaddition to synthesize chiral pyrazoline-spirooxindoles
| Autor: | Kaiqi Hu, Dong Zhang, Siyuan Wang, Lili Lin, Xiaoming Feng |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Organic Chemistry Frontiers. 10:2422-2428 |
| ISSN: | 2052-4129 |
| Popis: | The first asymmetric [4 + 1] annulation of oxindole 3-pyridinium salts and hydrazones is realized by using a chiral N,N′-dioxide-Pr(OTf)3 complex. A range of bioactive chiral pyrazoline-spirooxindoles are obtained in good yields with excellent ee values. |
| Databáze: | OpenAIRE |
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