Hydrochloric Acid → 4-(4-Fluorobenzyl)-1-(2-(4-fluorophenoxy)ethyl)piperidine hydrochloride

反応式

Br.[F:2][C:3]1[CH:16]=[CH:15][C:6](C(C2CCNCC2)=O)=[CH:5][CH:4]=1.[C:17]([N:20]1[CH2:25][CH2:24][CH:23]([C:26](=O)[C:27]2[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=2)[CH2:22][CH2:21]1)(=O)[CH3:18].[OH-:35].[Na+].[ClH:37]>>[ClH:37].[F:33][C:30]1[CH:31]=[CH:32][C:27]([CH2:26][CH:23]2[CH2:24][CH2:25][N:20]([CH2:17][CH2:18][O:35][C:6]3[CH:15]=[CH:16][C:3]([F:2])=[CH:4][CH:5]=3)[CH2:21][CH2:22]2)=[CH:28][CH:29]=1

参加物

反応物 4

HCID 313Hydrochloric Acid

HCID 14798Sodium Hydroxide

HCID 1172571-Acetyl-4-(4-fluorobenzoyl)piperidine

HCID 186215174-(p-Fluorobenzoyl)piperidine hydrobromide

生成物 1

HCID 232944164-(4-Fluorobenzyl)-1-(2-(4-fluorophenoxy)ethyl)piperidine hydrochloride収率 98%

実験手順

4-(4-Fluorobenzoyl)piperidine hydrobromide. A solution of 1-acetyl-4-(4-fluoro-benzoyl)piperidine (1.20 g, 4.80 mmol) in HCl (6N, 15 mL) was refluxed for 2 h. The cooled solution was made basic (NaOH) and then extracted with benzene (2×40 mL). The collected organic phase was washed with brine (50 mL), dried and was concentrated under reduced pressure. The free amine was dissolved in HBr (saturated solution in MeOH, 10 mL). The precipitated hydrobromide salt was collected, washed with ether (2×4 mL) and dried in vacuo to afford the title compound as a colorless solid (1.54 g, 98%): mp 198° C.; 1H NMR (CD3OD) 1.80-2.00 (m, 2H), 2.05-2.18 (m, 2H), 3.12-3.28 (m, 2H), 3.40-3.50 (m, 2H), 3.70-3.85 (m, 1H), 4.85 (s, 2H), 7.24 (t, J=8.3 Hz, 2H), 8.10 (dd, J=5.7 and 8.7 Hz, 2H).