申请人:Villa Marco
公开号:US20060276657A1
公开(公告)日:2006-12-07
A process for preparing Anastrozole is provided. In the process the steps of a. combining 3,5-bis (2-cyanoisopropyl)toluene, a solvent selected from the group consisting of acetonitrile, dichloromethane and chlorobenzene, a brominating reagent selected from a group consisting of N-bromosuccinimide and 1,3-dibromo-5,5-dimethylhydantoin, and 2,2′-azobis(2-methylpropionitrile); b. heating;
c. combining with 1,2,4-triazole, a solvent selected from a group consisting of N-methylpyrrolidine, dimethylformamide, mixtures of NMP and DMF, dimethylsulfoxide, mixtures of DMSO and toluene, acetone, ACN, and tetrahydrofuran, a base selected from a group consisting of NaOH, KOH, K
2
CO
3
, and Na
2
CO
3
, and 1,3-benzendiacetonitrile-5-(bromomethyl)-α,α,acute over (α)},acute over (α)}-tetramethyl, at a temperature below −20° C. are performed.
提供了一种制备
阿那曲唑的过程。该过程包括以下步骤:a.将3,5-双(2-
氰基异丙基)
甲苯、从以下组中选择的溶剂(
乙腈、
二氯甲烷和
氯苯)、从以下组中选择的
溴化试剂(N-
溴代琥珀
酰亚胺和1,3-二
溴-5,5-二甲基
异噻唑酮)和2,2'-偶氮
丙腈混合;b.加热;c.将
1,2,4-三唑、从以下组中选择的溶剂(
N-甲基吡咯烷、二甲基甲酰胺、
NMP和
DMF混合物、
二甲基亚砜、
DMSO和
甲苯混合物、
丙酮、ACN和
四氢呋喃)和从以下组中选择的碱(NaOH、KOH、K2CO3和Na2CO3)以及
1,3-苯二乙腈-5-(
溴甲基)-α、α,acute over (α)},acute over (α)}-四甲基混合,在低于-20℃的温度下进行。