Water → HCID 11174123, compound
Reaction equation
[NH:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1.[H-].[Na+].[C:12]([O:16][C:17]([N:19]1[CH2:24][CH2:23][CH:22](OS(C2C=CC(C)=CC=2)(=O)=O)[CH2:21][CH2:20]1)=[O:18])([CH3:15])([CH3:14])[CH3:13].O>CN(C)C=O>[C:12]([O:16][C:17]([N:19]1[CH2:24][CH2:23][CH:22]([N:1]2[C:5]3[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=3[N:3]=[CH:2]2)[CH2:21][CH2:20]1)=[O:18])([CH3:15])([CH3:13])[CH3:14]Participants
6
Procedure
1H-Benzimidazole (300 mg) was dissolved in N,N-dimethylformamide (6 ml), added with sodium hydride (60%, in oil, 122 mg) and stirred at room temperature for 1 hour. Subsequently, the reaction mixture was added with 1-(tert-butoxycarbonyl)-4-(p-toluenesulfonyloxy)piperidine (1.08 g) and further stirred at room temperature for 23 hours and at 60° C. for 2 hours. The reaction mixture was added with water (10 ml) and extracted twice with ethyl acetate (10 ml). The organic layer was dried over anhydrous magnesium sulfate, and then the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: ethyl acetate) to obtain 192 mg of the title compound. Yield: 25%.
Workup
- stirringfurther stirred at room temperature for 23 hours and at 60° C. for 2 hours
- extractionextracted twice with ethyl acetate (10 ml)
- dry with materialThe organic layer was dried over anhydrous magnesium sulfate
- customthe solvent was evaporated under reduced pressure
- customThe residue was purified by silica gel column chromatography (elution solvent: ethyl acetate)
Sources & evidence
- ORD record
- ord-dfdb665ce0fb4baa9328ef068103ab4f
- Source dataset
- uspto-grants-2004_09
- Patent number
- US06790854B2
Reaction notes
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