Piperidine → 1-Acetyl-3-(4-piperidinobenzoyl)piperidine
Reaction equation
[C:1]([N:4]1[CH2:9][CH2:8][CH2:7][CH:6]([C:10](=[O:18])[C:11]2[CH:16]=[CH:15][C:14](F)=[CH:13][CH:12]=2)[CH2:5]1)(=[O:3])[CH3:2].[NH:19]1[CH2:24][CH2:23][CH2:22][CH2:21][CH2:20]1>>[C:1]([N:4]1[CH2:9][CH2:8][CH2:7][CH:6]([C:10](=[O:18])[C:11]2[CH:16]=[CH:15][C:14]([N:19]3[CH2:24][CH2:23][CH2:22][CH2:21][CH2:20]3)=[CH:13][CH:12]=2)[CH2:5]1)(=[O:3])[CH3:2]Participants
3
Conditions
- Temperature
- 100 °C
Procedure
A mixture consisting of 3.73 g of 1-acetyl-3-(4-fluorobenzoyl)piperidine and 5 ml of piperidine was stirred at 100° C. for 24 hours and the reaction mixture was then worked up in the same manner as Example 1. The residue was recrystallized from ethyl ether-n-hexane to give 3.2 g of colorless crystals melting at 116°-120° C.
Workup
- customThe residue was recrystallized from ethyl ether-n-hexane