HRID465422

反应详情

EQUATION

反应方程式

HRID 465422 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A solution of the sodium salt of 4-(4-acetonylphenoxy)-3-hydroxy-1H-pyrrole-2,5-dione (1.41 g) and 2-(4-amino-3,5-dichlorophenyl)-2-hydroxy ethylamine (1.0 g) in methanol was treated with sodium cyanoborohydride (0.35 g) and stirred at ambient temperature for 18 hours. The solvent was removed in vacuo, the residue dissolved in acetone and purified by column chromatography on silica using acetone as eluent followed by methanol after the elution of fast-running impurities. The solid obtained was washed with acetone and filtered to give 4-[4-[2-[(4-amino-3,5-dichloro-β-hydroxyphenethyl)amino]propyl]phenoxy]-3-hydroxy-1H-pyrrole-2,5-dione hemihydrate as a (34:66) mixture of diastereoisomers.

WORKUP

后处理

  1. customThe solvent was removed in vacuo
  2. dissolutionthe residue dissolved in acetone
  3. custompurified by column chromatography on silica
  4. washafter the elution of fast-running impurities
  5. customThe solid obtained
  6. washwas washed with acetone
  7. filtrationfiltered