Potassium Carbonate → tert-butyl [(1S)-2-({1-[6-(cyclobutylmethoxy)-1,3-benzoxazol-2-yl]piperidin-4-yl}oxy)-1-methylethyl]carbamate

HRID 2368117Notes

Reaction equation

HRID 2368117 reaction equation
[OH:1][C:2]1[CH:28]=[CH:27][C:5]2[N:6]=[C:7]([N:9]3[CH2:14][CH2:13][CH:12]([O:15][CH2:16][C@@H:17]([NH:19][C:20](=[O:26])[O:21][C:22]([CH3:25])([CH3:24])[CH3:23])[CH3:18])[CH2:11][CH2:10]3)[O:8][C:4]=2[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].I[CH2:36][CH:37]1[CH2:40][CH2:39][CH2:38]1>CN(C=O)C.C(OCC)(=O)C>[CH:37]1([CH2:36][O:1][C:2]2[CH:28]=[CH:27][C:5]3[N:6]=[C:7]([N:9]4[CH2:10][CH2:11][CH:12]([O:15][CH2:16][C@@H:17]([NH:19][C:20](=[O:26])[O:21][C:22]([CH3:24])([CH3:23])[CH3:25])[CH3:18])[CH2:13][CH2:14]4)[O:8][C:4]=3[CH:3]=2)[CH2:40][CH2:39][CH2:38]1

Participants

6

Reactant 3

HCID 11430Potassium Carbonate2×HCID 2763052(Iodomethyl)cyclobutane2×HCID 86658692tert-butyl [(1S)-2-{[1-(6-hydroxy-1,3-benzoxazol-2-yl)piperidin-4-yl]oxy}-1-methylethyl]carbamate

Product 1

HCID 86658706tert-butyl [(1S)-2-({1-[6-(cyclobutylmethoxy)-1,3-benzoxazol-2-yl]piperidin-4-yl}oxy)-1-methylethyl]carbamateYield 55.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of tert-butyl [(1S)-2-{[1-(6-hydroxy-1,3-benzoxazol-2-yl)piperidin-4-yl]oxy}-1-methylethyl]carbamate (200 mg) in DMF (5 mL) were added potassium carbonate (210 mg) and (iodomethyl)cyclobutane (150 mg), and the mixture was stirred at room temperature for 15 hr. Potassium carbonate (210 mg) and (iodomethyl)cyclobutane (150 mg) were added to the reaction mixture, and the mixture was stirred at room temperature for 15 hr. The reaction mixture was diluted with ethyl acetate, washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the obtained residue was purified by silica gel chromatography (hexane/ethyl acetate) to give the title compound (130 mg).

Workup

  1. stirringthe mixture was stirred at room temperature for 15 hr
  2. washwashed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe obtained residue was purified by silica gel chromatography (hexane/ethyl acetate)

Sources & evidence

ORD record
ord-bdae59be09ef4774b240e5f0dfcffb2a
Source dataset
uspto-grants-2014_04
Patent number
US08703758B2

Reaction notes

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