1-BENZYLPYRAZOLE DERIVATIVES, PREPARATION THEREOF AND THERAPEUTIC USE THEREOF
申请人:BARTH Francis
公开号:US20100144818A1
公开(公告)日:2010-06-10
The present invention relates to compounds corresponding to formula (I):
in which Y, R
1
, R
2
, R
3
, R
4
, R
5
and R
6
are as defined herein. The present invention also relates to the methods of preparation and the therapeutic applications of the compounds of formula (I).
A fast and efficient bromination of isoxazoles and pyrazoles by microwave irradiation
作者:Guo Li、Ramesh Kakarla、Samuel W. Gerritz
DOI:10.1016/j.tetlet.2007.04.118
日期:2007.6
fast and efficient method has been developed for the bromination of isoxazoles and pyrazoles using microwave irradiation. In this method, N-bromosuccinimide was used in different acid solvents according to the reactivity of the substrates to give mono-brominated isoxazoles and pyrazoles in good yields. Trifluoroacetic acid was found to be the best solvent for highly unreactive isoxazoles and pyrazoles