HRID1970490

反应详情

EQUATION

反应方程式

HRID 1970490 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

To a solution of 1.6 g (S)-2-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoic acid in 8 ml DMF were added 1.7 ml N-ethylmorpholine, 1.0 g 1-butoxy-carbonylpiperazine hydrotrifluoroacetate and 1.1 g TOTU. The solution was stirred for 12 h before being diluted with ethyl acetate and extracted subsequently with aqueous LiCl (4%), 0.1 M HCl and saturated aqueous NaHCO3. The crude product obtained after evaporation of the solvent was used without further purification. Yield: 1.8 g.

WORKUP

后处理

  1. extractionextracted subsequently with aqueous LiCl (4%), 0.1 M HCl and saturated aqueous NaHCO3