Sar, Dinabandhu ; Paul, Rajesh ; Sengoden, Mani ; Punniyamurthy, Tharmalingam (2014) Synthesis of substituted pyrazoles from vinylhydrozones via bromoamination and hydroamination with 2,2,6,6-tetramethylpiperidine-1-oxyl and N-bromosuccinimide Asian Journal of Organic Chemistry, 3 (5). pp. 638-643. ISSN 2193-5807
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Official URL: http://onlinelibrary.wiley.com/wol1/doi/10.1002/aj...
Related URL: http://dx.doi.org/10.1002/ajoc.201300294
Abstract
The C-H oxidative amination of (Z)-1-allylidene-2-arylhydrazines with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)/N-bromosuccinimide (NBS) provides highly substituted pyrazoles with 100 % regioselectivity in moderate to good yields. These protocols are effective at room temperature and offer a route for the construction of the target five membered heterocycles.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley & Sons, Inc. |
| Keywords: | C-H Amination; C-N Bond Formation; Oxidative Cyclization; Pyrazoles; 2,2,6,6-Tetramethylpiperidine-1-Oxyl |
| ID Code: | 106676 |
| Deposited On: | 22 Jun 2017 10:10 |
| Last Modified: | 22 Jun 2017 10:10 |
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