Water → trans-(-)-4-(4-Fluorophenyl)-3-hydroxymethylpiperidine monohydrate
Reaktionsgleichung
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]2[CH2:13][CH2:12][NH:11][CH2:10][C@H:9]2[CH2:14][OH:15])=[CH:4][CH:3]=1.O>C1(C)C=CC=CC=1>[OH2:15].[F:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]2[CH2:13][CH2:12][NH:11][CH2:10][C@H:9]2[CH2:14][OH:15])=[CH:4][CH:3]=1Komponenten
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A 200-ml four-necked glass flask equipped with a thermometer and a reflux condenser was charged with 63 ml of toluene and 10.54 g (50.37 mmol) of (−)-(3S,4R)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine, and the mixture was warmed and dissolved. 1.13 g (62.71 mmol) Of water was added to the above mixture at 50° C. to allow to crystallize. Thereafter, the mixture was kept for one hour at a temperature of from 20° to 30° C., and then the crystals were collected by filtration. The obtained crystals were thoroughly washed with 20 ml of toluene, to give white crystals of (−)-(3S,4R)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine monohydrate. Thereafter, the crystals were dried under a reduced pressure at a temperature of 30° C. or lower, and weighed 10.24 g. The yield was 89.45% based on (−)-(3S,4R)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine.
Aufarbeitung
- customA 200-ml four-necked glass flask equipped with a thermometer and a reflux condenser
- temperaturethe mixture was warmed
- dissolutiondissolved
- customto crystallize
- filtrationthe crystals were collected by filtration
- washThe obtained crystals were thoroughly washed with 20 ml of toluene
Quellen und Nachweise
- ORD-Eintrag
- ord-5e90705127664cf8907fd18d9f49df4b
- Quelldatensatz
- uspto-grants-2003_08
- Patentnummer
- US06610851B1
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