Title of article
A mild and efficient method for halogenation of 3,5-dimethyl pyrazoles by ultrasound irradiation using N-halosuccinimides
Author/Authors
Stefani، نويسنده , , Hélio A. and Pereira، نويسنده , , Claudio M.P. and Almeida، نويسنده , , Roberta B. and Braga، نويسنده , , Rodolpho C. and Guzen، نويسنده , , Karla P. and Cella، نويسنده , , Rodrigo، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2005
Pages
5
From page
6833
To page
6837
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.
Keywords
Heterocycles , pyrazoles , Halogenation , Ultrasound irradiation , N-Halosuccinimides
Journal title
Tetrahedron Letters
Serial Year
2005
Journal title
Tetrahedron Letters
Record number
1846786
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