HRID465422
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
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
- customThe solvent was removed in vacuo
- dissolutionthe residue dissolved in acetone
- custompurified by column chromatography on silica
- washafter the elution of fast-running impurities
- customThe solid obtained
- washwas washed with acetone
- filtrationfiltered