An Efficient Synthetic Process for Scale-Up Production of 4,5-Diamino-2-(trifluoromethyl)benzonitrile and 5-Bromo-3-(trifluoromethyl)benzene-1,2-diamine
摘要:
Starting from 4-amino-2-(trifluoromethyl)benzonitrile (6), an efficient and nonchromatographic process was developed for multihundred gram production of 4,5-diamino-2-(trifluoromethyl)benzonitrile (1) in 73% yield and 98 HPLC area% purity over four synthetic steps. The same synthetic strategy was applied to 4-bromo-2-(trifluoromethyl)aniline (7) that afforded 5-bromo-3-(trifluoromethyl)benzene- 1,2-diamine (5) in 81% overall yield and 99% HPLC area% purity.
An Efficient Synthetic Process for Scale-Up Production of 4,5-Diamino-2-(trifluoromethyl)benzonitrile and 5-Bromo-3-(trifluoromethyl)benzene-1,2-diamine
摘要:
Starting from 4-amino-2-(trifluoromethyl)benzonitrile (6), an efficient and nonchromatographic process was developed for multihundred gram production of 4,5-diamino-2-(trifluoromethyl)benzonitrile (1) in 73% yield and 98 HPLC area% purity over four synthetic steps. The same synthetic strategy was applied to 4-bromo-2-(trifluoromethyl)aniline (7) that afforded 5-bromo-3-(trifluoromethyl)benzene- 1,2-diamine (5) in 81% overall yield and 99% HPLC area% purity.
Novel heterocycle derivatives useful as selective androgen receptor modulators (SARMs)
申请人:Zhang Xuqing
公开号:US20060211756A1
公开(公告)日:2006-09-21
The present invention is directed to novel heterocycle derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and conditions modulated by the androgen receptor.
本发明涉及新型杂环衍生物、包含它们的药物组合物以及它们在治疗受雄激素受体调节的疾病和病状中的应用。
NOVEL HETEROCYCLE DERIVATIVES USEFUL AS SELECTIVE ANDROGEN RECEPTOR MODULATORS (SARMS)
申请人:Zhang Xuqing
公开号:US20090131365A1
公开(公告)日:2009-05-21
The present invention is directed to novel heterocycle derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and conditions modulated by the androgen receptor.
本发明涉及新型杂环衍生物,包含它们的制药组合物以及它们在治疗受雄激素受体调节的疾病和病状中的应用。
US7465809B2
申请人:——
公开号:US7465809B2
公开(公告)日:2008-12-16
US7781473B2
申请人:——
公开号:US7781473B2
公开(公告)日:2010-08-24
An Efficient Synthetic Process for Scale-Up Production of 4,5-Diamino-2-(trifluoromethyl)benzonitrile and 5-Bromo-3-(trifluoromethyl)benzene-1,2-diamine
作者:Xun Li、Raymond A. Ng、Yongzheng Zhang、Ronald K. Russell、Zhihua Sui
DOI:10.1021/op9000498
日期:2009.5.15
Starting from 4-amino-2-(trifluoromethyl)benzonitrile (6), an efficient and nonchromatographic process was developed for multihundred gram production of 4,5-diamino-2-(trifluoromethyl)benzonitrile (1) in 73% yield and 98 HPLC area% purity over four synthetic steps. The same synthetic strategy was applied to 4-bromo-2-(trifluoromethyl)aniline (7) that afforded 5-bromo-3-(trifluoromethyl)benzene- 1,2-diamine (5) in 81% overall yield and 99% HPLC area% purity.