Reaction equation
[H-].[Al+3].[Li+].[H-].[H-].[H-].[F:7][C:8]1[CH:13]=[CH:12][C:11]([CH:14]2[CH2:19][C:18](=O)[NH:17][CH2:16][CH:15]2[CH2:21][O:22][C:23]2[CH:28]=[CH:27][C:26]3[O:29][CH2:30][O:31][C:25]=3[CH:24]=2)=[CH:10][CH:9]=1>O1CCCC1>[F:7][C:8]1[CH:13]=[CH:12][C:11]([CH:14]2[CH2:19][CH2:18][NH:17][CH2:16][CH:15]2[CH2:21][O:22][C:23]2[CH:28]=[CH:27][C:26]3[O:29][CH2:30][O:31][C:25]=3[CH:24]=2)=[CH:10][CH:9]=1Participants
4
Procedure
A solution of lithium aluminium hydride in tetrahydrofuran (1.0M solution, 2 ml, 2.0 mmol) was added over ten minutes to a well stirred solution of 4-(4-fluorophenyl)-3-[(3,4-methylenedioxyphenyl)oxymethyl]piperidine-6-one (0.41 g, 0.96 mmol) in tetrahydrofuran (7 ml), maintaining the temperature below 25° C. The reaction solution was stirred for 2 hours and then quenched first of all with water (0.16 ml), then with 15% aqueous sodium hydroxide solution (0.1 ml), and finally with water again (0.4 ml). The reaction mixture was stirred for 0.5 hours to complete the precipitation, diluted with dichloromethane (30 ml) and filtered. The filtrate was evaporated in vacuo to give the title product with a trans/cis ratio=72:28. Yield 90%.
Workup
- temperaturemaintaining the temperature below 25° C
- customquenched first of all with water (0.16 ml)
- stirringThe reaction mixture was stirred for 0.5 hours
- customthe precipitation
- additiondiluted with dichloromethane (30 ml)
- filtrationfiltered
- customThe filtrate was evaporated in vacuo
Sources & evidence
- ORD record
- ord-fb0e71c853f743018e8c5ddad34674a8
- Source dataset
- uspto-grants-2004_04
- Patent number
- US06716985B2
Linked notes
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