@article{article518147fb,
title   = {A mild and efficient method for halogenation of 3,5-dimethyl pyrazoles by ultrasound irradiation using N-halosuccinimides},
author = {Stefani, Hélio Alexandre and Pereira, Claudio Martim Pereira de and Almeida, Roberta Bernardo de and Braga, Rodolpho de Campos and Guzen, Karla Pierdoná and Cella, Rodrigo},
year = {2005},
doi = {10.1016/j.tetlet.2005.08.027},
journal   = {Tetrahedron Letters}
}