HRID1944151

反应详情

EQUATION

反应方程式

HRID 1944151 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

To 3-(tert-butoxycarbonylamino)-2-(4-((triisopropylsilyloxy)methyl)phenyl)propanoic acid (E203) in THF under N2 and cooled to 0° C. was added CH3I followed by NaH and the solution was warmed and allowed to stir for 18 h. The mixture was taken up in EtOAc and extracted with NH4Cl (sat), dried (MgSO4), filtered, and evaporated. Column chromatography (SiO2, 0-10% MeOH/CH2Cl2 gradient) gave pure 3-(tert-butoxycarbonyl(methyl)amino)-2-(4-((tnisopropylsilyloxy)methyl)phenyl)propanoic acid (E204).

WORKUP

后处理

  1. temperaturethe solution was warmed
  2. extractionextracted with NH4Cl (sat)
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. customevaporated