Sodium borohydride → HCID 20344139, Verbindung

Reaktionsgleichung

[BH4-].[Na+].Cl.[CH3:4][O:5][C:6]1[CH:7]=[C:8]([C:12](=[O:19])[CH2:13][CH:14]2[CH2:18][CH2:17][CH2:16][NH:15]2)[CH:9]=[CH:10][CH:11]=1>CO.O>[CH3:4][O:5][C:6]1[CH:7]=[C:8]([CH:12]([OH:19])[CH2:13][CH:14]2[CH2:18][CH2:17][CH2:16][NH:15]2)[CH:9]=[CH:10][CH:11]=1

Komponenten

Versuchsvorschrift

4.8 g of sodium borohydride are added portionwise with stirring to a solution of 6.5 g of 1-(3-methoxyphenyl)-2-(2-pyrrolidinyl)-ethanone hydrochloride in 25 ml of methanol and 5 ml of water. After 1 hour the bulk of the methanol is distilled off under a vacuum. The residue is taken up with 20 ml of water and 10 ml of 6 N sodium hydroxide solution. The mixture is extracted 5 times with, in each case, 20 ml of diethylether. The organic phases are collected, dried over sodium sulphate and concentrated to an oil which is distilled. 4.5 g of the title compound are obtained as mixture of diastereoisomers of b.p. 136° at 0.005 mm Hg.