| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5279038 | Tetrahedron Letters | 2005 | 5 Pages |
Abstract
The 4-halo-3,5-dimethyl pyrazoles have been synthetisized in good yields in short reaction times in the absence of a catalyst by reaction of 3,5-dimethyl pyrazoles with N-halosuccinimides (NBS, NCS and NIS) under ultrasound irradiation. Finally, the halogenation of pyrazoles with Br2, ICl and I2 was showed in similar conditions.
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Authors
Hélio A. Stefani, Claudio M.P. Pereira, Roberta B. Almeida, Rodolpho C. Braga, Karla P. Guzen, Rodrigo Cella,