Potassium Carbonate → (+/-)-6-{4-[1-(2-Cyclohexyl-ethyl)-piperidin-3-yl]-phenoxy}-nicotinamide

HRID 228210Notes

Reaction equation

HRID 228210 reaction equation
Cl.[NH:2]1[CH2:7][CH2:6][CH2:5][CH:4]([C:8]2[CH:23]=[CH:22][C:11]([O:12][C:13]3[CH:21]=[CH:20][C:16]([C:17]([NH2:19])=[O:18])=[CH:15][N:14]=3)=[CH:10][CH:9]=2)[CH2:3]1.Br[CH2:25][CH2:26][CH:27]1[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH:27]1([CH2:26][CH2:25][N:2]2[CH2:7][CH2:6][CH2:5][CH:4]([C:8]3[CH:9]=[CH:10][C:11]([O:12][C:13]4[CH:21]=[CH:20][C:16]([C:17]([NH2:19])=[O:18])=[CH:15][N:14]=4)=[CH:22][CH:23]=3)[CH2:3]2)[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 15440(2-Bromoethyl)cyclohexaneHCID 68747046(+/-)-6-(4-Piperidin-3-yl-phenoxy)-nicotinamide hydrochloride2×

Product 1

HCID 59730028(+/-)-6-{4-[1-(2-Cyclohexyl-ethyl)-piperidin-3-yl]-phenoxy}-nicotinamideYield 42%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Combine 6-(4-Piperidin-3-yl-phenoxy)-nicotinamide (free base compound of example 322) (0.0255 g, 0.0858 mmol), 1-bromo-2-cyclohexylethane (0.0150 mL, 0.0958 mmol), and potassium carbonate (0.0245 g, 0.177 mmol) in dimethylformamide (1.0 mL) and stir for 10 min. Purify the reaction mixture by ion exchange chromatography (SCX resin, methanol→2 M ammonia/methanol) and silica gel chromatography (15:1→10:1 ethyl acetate:methanol) to provide 0.0146 g (42%) of the title compound as an off-white foam: high resolution mass spectrum (electrospray): m/z calc for C25H34N3O2 408.2651, found 408.2661; 1H NMR (methanol-d4): 8.61 (s br, 1H), 8.28 (d, 1H, J=7.8 Hz), 7.36 (d, 2H, J=7.8 Hz), 7.12 (d, 2H, J=7.8 Hz), 7.01 (d, 1H, J=8.3 Hz), 3.07 (d, 2H, J=10.2 Hz), 2.89 (t, 1H, J=11.2 Hz), 2.55-2.42 (m, 2H), 2.15-1.93 (m, 4H), 1.93-1.64 (m, 8H), 1.63-1.43 (m, 4H), 1.40-1.15 (m, 8H), 1.07-0.86 (m, 3H).

Workup

  1. customPurify the reaction mixture by ion exchange chromatography (SCX resin, methanol→2 M ammonia/methanol) and silica gel chromatography (15:1→10:1 ethyl acetate:methanol)

Sources & evidence

ORD record
ord-9d78b5333a2b408fbd31f1018a67ec58
Source dataset
uspto-grants-2009_07
Patent number
US07560463B2

Reaction notes

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