HRID987276

反应详情

EQUATION

反应方程式

HRID 987276 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

2-[4-(tert-Butoxycarbonylamino)phenyl]ethylmethanesulfonate (described in Example40a) (52.9 g; 0.168 mmole), (S)-2-ethoxy-3-(4-hydroxyphenyl)propanoic acid ethyl ester (described in Example 40h) (40 g; 0.168 mmole) and potassium carbonate (69.5 g; 0.503 mmole) were mixed in acetonitrile (1200 ml) and refluxed over night. Another portion of 2-[4-(tert-butoxycarbonylamino)phenyl]ethylmethanesulfonate (2.5 g; 7.9 mmole) was added. The reaction mixture was refluxed for 8 more hours then filtered. Evaporation of the filtrate gave 76.6 g 3-{4-[2-(4-tert-butoxycarbonylaminophenyl)ethoxy]phenyl}-(S)-2-ethoxypropanoic acid ethyl ester.

WORKUP

后处理

  1. temperaturerefluxed over night
  2. temperatureThe reaction mixture was refluxed for 8 more hours
  3. filtrationthen filtered
  4. customEvaporation of the filtrate