Water → HCID 59468960, compound

HRID 418373Notes

Reaction equation

HRID 418373 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH2:8][O:9][C:10]1[CH:15]=[CH:14][C:13]([C@H:16]2[CH2:20][CH2:19][C@:18]3([CH2:24][CH2:23][NH:22][C:21]3=[O:25])[N:17]2[C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])=[CH:12][CH:11]=1.[H-].[Na+].I[CH3:36].O>CN(C=O)C.C(OCC)(=O)C>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH2:8][O:9][C:10]1[CH:15]=[CH:14][C:13]([C@H:16]2[CH2:20][CH2:19][C@:18]3([CH2:24][CH2:23][N:22]([CH3:36])[C:21]3=[O:25])[N:17]2[C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])=[CH:12][CH:11]=1

Participants

7

Reactant 4

HCID 962WaterHCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 58027442HCID 58027442, compound

Product 1

HCID 59468960HCID 59468960, compoundYield 88%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 1,1-dimethylethyl(2R,5R)-2-(4-{[(2-fluorophenyl)methyl]oxy}phenyl)-6-oxo-1,7-diazaspiro[4.4]nonane-1-carboxylate (70 mg, 0.159 mmol) in dry DMF (1 ml) at 0° C. was added NaH 60% wt dispersion in mineral oil (10 mg, 0.238 mmol); after 15 minutes of stirring at room temperature, iodomethane (30 μl, 0.477 mmol) was added and the resulting mixture was stirred at room temperature for 2.5 hours. The mixture was cooled to 0° C., and water (4 ml) and ethyl acetate (10 ml) were added, the organic layer was washed with ice cold brine (3×10 ml), dried over Na2SO4 and evaporated. The crude material was purified by chromatography on silica gel using cyclohexanes/ethyl acetate (7:3) to afford the title compound as a white solid (63 mg, 88%); Rt (HPLC): 5.99 min; Rf (cyclohexane:ethyl acetate=1:1): 0.28; MS: (ES/+) m/z: 477 [M+Na+]; C26H31FN2O4 requires 454. 1H NMR (400 MHz, CDCl3) δ(ppm): 7.66 (d, 2H); 7.56-7.49 (m, 1H); 7.35-7.25 (m, 1H); 7.20-7.13 (m, 1H); 7.12-7.04 (m, 1H); 6.97 (dd, 2H); 5.14 and 5.12 (s, s, 2H); 5.02 and 4.88 (d, d, 1H); 3.52-3.45 and 3.41-3.22 (m, m, 2H); 2.96 and 2.92 (s, s, 3H); 2.67-2.56 and 2.53-2.42 (m, m, 1H); 2.40-2.22 (m, 2H); 2.08-1.79 (m, 2H); 1.77-1.68 (m, 1H), 1.40 and 1.16 (s, s, 9H).

Workup

  1. stirringthe resulting mixture was stirred at room temperature for 2.5 hours
  2. temperatureThe mixture was cooled to 0° C.
  3. washthe organic layer was washed with ice cold brine (3×10 ml)
  4. dry with materialdried over Na2SO4
  5. customevaporated
  6. customThe crude material was purified by chromatography on silica gel

Sources & evidence

ORD record
ord-87545a8a3bb0423dba0972cb681c5979
Source dataset
uspto-grants-2012_01
Patent number
US08093268B2

Reaction notes

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