| Autor: |
Pooja Goyal, Akhil K. Dubey, Raghunath Chowdhury, Amey Wadawale |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1518-1526 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1860-5397 |
| DOI: |
10.3762/bjoc.20.136 |
| Popis: |
The enantioselective 1,4-addition reaction of pyrazolin-5-ones to α,β-unsaturated ketones catalyzed by a cinchona alkaloid-derived primary amine–Brønsted acid composite is reported. Both enantiomers of the anticipated pyrazole derivatives were obtained in good to excellent yields (up to 97%) and high enantioselectivities (up to 98.5% ee) under mild reaction conditions. In addition, this protocol was further expanded to synthesize highly enantioenriched hybrid molecules bearing biologically relevant heterocycles. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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