HRID232230

反应详情

EQUATION

反应方程式

HRID 232230 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

In 10 ml of dichloromethane was dissolved 896 mg of Compound (93). To the solution were added 680 mg of (4S)-4-benzyloxycarbonylamino-3-isoxazolidinone and 593 mg of DCC, and the mixture was stirred at room temperature for one hour. Then, precipitating crystals were filtered off, and the solvent was evaporated off. The residue was subjected to a silica gel column chromatography, followed by elution with hexane--ethyl acetate (3:2) to give 723 mg of the subject Compound (94) as an oily product.

WORKUP

后处理

  1. customThen, precipitating crystals
  2. filtrationwere filtered off
  3. customthe solvent was evaporated off
  4. washfollowed by elution with hexane--ethyl acetate (3:2)