2-(Dimethylamino)ethanol → HCID 90415383, compound

HRID 1428599Notes

Reaction equation

HRID 1428599 reaction equation
Cl[C:2]1[C:7]([C:8]([F:11])([F:10])[F:9])=[CH:6][C:5]([N+:12]([O-:14])=[O:13])=[CH:4][N:3]=1.[CH3:15][N:16]([CH3:20])[CH2:17][CH2:18][OH:19].[H-].[Na+]>C1COCC1>[CH3:15][N:16]([CH3:20])[CH2:17][CH2:18][O:19][C:2]1[C:7]([C:8]([F:11])([F:10])[F:9])=[CH:6][C:5]([N+:12]([O-:14])=[O:13])=[CH:4][N:3]=1

Participants

5

Reactant 3

HCID 79022-(Dimethylamino)ethanolHCID 24758Sodium hydrideHCID 38491402-Chloro-5-nitro-3-(trifluoromethyl)pyridine

Product 1

HCID 90415383HCID 90415383, compoundYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-chloro-5-nitro-3-(trifluoromethyl)pyridine (0.5, 2.207 mmol) and 2-(dimethylamino)ethanol (0.393 g, 4.41 mmol) in THF (10 mL) was added NaH (0.177 g, 4.41 mmol) at 0° C. The resulting mixture was stirred at rt. After 5 h, TLC analysis showed the starting material had disappeared. The solvent was removed in vacuo. The residue was dissolved in DCM (60 mL) and washed with H2O (20 mL) and brine (20 mL). The organic layer was dried over Na2SO4, filtered and concentrated. The crude product was purified by silica column chromatography (DCM/MeOH=20/1) to yield a white solid of N,N-dimethyl-2-((5-nitro-3-(trifluoromethyl)pyridin-2-yl)oxy)ethanamine (0.5 g, 1.717 mmol, 78.0% yield): 1H NMR (400 MHz, CD3OD) δ 9.25 (d, J=2.4 Hz, 1H), 8.74 (d, J=2.4 Hz, 1H), 4.73 (t, J=5.4 Hz, 2H), 2.88 (t, J=5.4 Hz, 2H), 2.37 (s, 6H); ES-LCMS m/z 280.0 (M+H).

Workup

  1. customThe solvent was removed in vacuo
  2. dissolutionThe residue was dissolved in DCM (60 mL)
  3. washwashed with H2O (20 mL) and brine (20 mL)
  4. dry with materialThe organic layer was dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product was purified by silica column chromatography (DCM/MeOH=20/1)

Sources & evidence

ORD record
ord-71085924b1294e5791db47d2ab2d5ef8
Source dataset
uspto-grants-2015_01
Patent number
US08937071B2

Reaction notes

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