1-Benzyl-2-piperidone → 5-Phenyl-3-[1-(phenylmethyl)-1,2,3,6-tetrahydro-4-pyridinyl]-1H-indole-7-carboxamide

HRID 2267482Notes

Reaction equation

[C:1]1([C:7]2[CH:8]=[C:9]3[C:13](=[C:14]([C:16]([NH2:18])=[O:17])[CH:15]=2)[NH:12][CH:11]=[CH:10]3)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:19]([N:26]1[CH2:31][CH2:30][CH2:29][CH2:28][C:27]1=O)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.C[O-].[Na+]>CO>[C:1]1([C:7]2[CH:8]=[C:9]3[C:13](=[C:14]([C:16]([NH2:18])=[O:17])[CH:15]=2)[NH:12][CH:11]=[C:10]3[C:29]2[CH2:30][CH2:31][N:26]([CH2:19][C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[CH2:27][CH:28]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

Conditions

Temperature: 80 °C

Procedure

To the solution of 5-phenyl-1H-indole-7-carboxamide (3.11 g, 12 mmol) in methanol (100 mL) was added benzyl piperidone (7.4 g, 36 mmol), followed by 156 mL of NaOMe (0.5 M in MeOH). The reaction mixture was then heated at 80° C. overnight. The solution was cooled to ambient temperature and the solvent removed under reduced pressure, and the resulting residue redisolved in a bilayer of ethyl acetate and 5% sodium hydroxide solution. The organic phase washed with brine, dried over potassium carbonate, and the solvent removed under reduced pressure. The residue was purified by silica gel chromatography (CH2Cl2:MeOH:NH4OH=96:3:1) to provide the desired product (2.66 g, 51%).

Workup

temperatureThe solution was cooled to ambient temperature
customthe solvent removed under reduced pressure
washThe organic phase washed with brine
dry with materialdried over potassium carbonate
customthe solvent removed under reduced pressure
customThe residue was purified by silica gel chromatography (CH2Cl2:MeOH:NH4OH=96:3:1)

Sources & evidence

ORD record: ord-a8ad7f01f3d84c81837c1564f27f1d03
Source dataset: uspto-grants-2010_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07858796B2

Reaction notes

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