HRID1970503

反应详情

EQUATION

反应方程式

HRID 1970503 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

To a solution of 9.06 g (S)-2-Benzyloxycarbonylamino-pentanedioic acid 5-tert-butyl ester in 100 ml DMF were added 5.00 g piperazine-1-carboxylic acid butyl ester hydrotrifluoroacetate, 13.7 ml N-ethylmorpholine and 8.8 g TOTU. After stirring for 12 h the solution was diluted with ethyl acetate and subsequently washed with aqueous LiCl (4%) and saturated NaHCO3. The crude product obtained after evaporation of the solvent was used without further purification. Yield: 15.8 g.

WORKUP

后处理

  1. washsubsequently washed with aqueous LiCl (4%) and saturated NaHCO3