Methyl iodide → HCID 118114413, compound

HRID 1050499Notes

Reaction equation

HRID 1050499 reaction equation
[C:1]([C:5]1[CH:26]=[CH:25][C:8]([C:9]([NH:11][C@@H:12]2[CH2:17][CH2:16][CH2:15][N:14]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:13]2)=[O:10])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].I[CH3:30]>CN(C=O)C.CCOC(C)=O>[C:1]([C:5]1[CH:26]=[CH:25][C:8]([C:9]([N:11]([C@@H:12]2[CH2:17][CH2:16][CH2:15][N:14]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:13]2)[CH3:30])=[O:10])=[CH:7][CH:6]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

6

Reactant 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 59293265HCID 59293265, compound

Product 1

HCID 118114413HCID 118114413, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of (R)-tert-butyl 3-aminopiperidine-1-carboxylate (8) (6.27 g, 33.5 mmol) in DCM (100 mL) was added DIEA (8.75 mL, 50.3 mmol) and then 4-tert-butylbenzoyl chloride (8.0 mL, 43.6 mmol) in drop-wise manner. The mixture was stirred for 3 h at RT, diluted with DCM, washed with 1N NaOH, dried, and concentrated. The residue was subjected to flash column chromatography with 0 to 10% EtOAc in DCM to give (R)-tert-butyl 3-(4-tert-butylbenzamido)piperidine-1-carboxylate (11.0 g, 91%). To a solution of (R)-tert-butyl 3-(4-tert-butylbenzamido)piperidine-1-carboxylate (850 mg, 2.36 mmol) in DMF (10 mL) was added NaH (60% in mineral oil, 190 mg, 4.72 mmol). The mixture was stirred at RT for 10 min and then iodomethane (0.44 mL, 7.08 mmol) was added. The mixture was stirred at RT for 1 h, and diluted with 150 mL EtOAc. The mixture was washed with water ×2, dried, and concentrated. The residue was subjected to flash column with 0 to 3% MeOH in DCM to afford (R)-tert-butyl 3-(4-tert-butyl-N-methylbenzamido)piperidine-1-carboxylate (9) in quantitative yield. It was treated with 15 mL 4N HCl in dioxane at RT for 1 h. The mixture was concentrated in vacuo to dryness to afford (R)-4-tert-butyl-N-methyl-N-(piperidin-3-yl)benzamide (10) HCl salt in quantitative yield.

Workup

  1. stirringThe mixture was stirred at RT for 1 h
  2. washThe mixture was washed with water ×2
  3. customdried
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-b7c172dbdaf84de3a0574707f7949fcf
Source dataset
uspto-grants-2016_07
Patent number
US09382246B2

Reaction notes

Loading…