A mild and efficient method for halogenation of 3,5-dimethyl pyrazoles by ultrasound irradiation using N-halosuccinimides

Nenhuma Miniatura disponível
Data
2005-10-03
Autores
Stefani, H. A.
Pereira, CMP
Almeida, R. B.
Braga, R. C.
Guzen, K. P.
Cella, R.
Orientadores
Tipo
Artigo
Título da Revista
ISSN da Revista
Título de Volume
Resumo
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 Br-2, ICI and I-2 was showed in similar conditions. (c) 2005 Elsevier B.V. All rights reserved.
Descrição
Citação
Tetrahedron Letters. Oxford: Pergamon-Elsevier B.V., v. 46, n. 40, p. 6833-6837, 2005.