Yetra, Santhivardhana Reddy ; Mondal, Santigopal ; Suresh, Eringathodi ; Biju, Akkattu T. (2015) Enantioselective Synthesis of Functionalized Pyrazoles by NHC-Catalyzed Reaction of Pyrazolones with α,β-Unsaturated Aldehydes Organic Letters, 17 (6). pp. 1417-1420. ISSN 1523-7060
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Official URL: http://doi.org/10.1021/acs.orglett.5b00293
Related URL: http://dx.doi.org/10.1021/acs.orglett.5b00293
Abstract
The N-heterocyclic carbene (NHC)-organocatalyzed enantioselective annulation reaction of pyrazolones with α,β-unsaturated aldehydes proceeding via the chiral α,β-unsaturated acyl azolium intermediates under oxidative conditions is presented. The reaction afforded dihydropyranone-fused pyrazoles in moderate to good yields and good er values under operationally simple and base-free conditions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society |
| ID Code: | 128676 |
| Deposited On: | 03 Nov 2022 06:51 |
| Last Modified: | 03 Nov 2022 06:51 |
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