Morpholine → 2-Morpholino-5-nitropyridine

HRID 1892238Notes

Reaction equation

HRID 1892238 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][N:3]=1.[NH:11]1[CH2:16][CH2:15][O:14][CH2:13][CH2:12]1>ClCCl>[N+:8]([C:5]1[CH:6]=[CH:7][C:2]([N:11]2[CH2:16][CH2:15][O:14][CH2:13][CH2:12]2)=[N:3][CH:4]=1)([O-:10])=[O:9]

Participants

4

Reactant 2

HCID 8083MorpholineHCID 782402-Bromo-5-nitropyridine

Product 1

HCID 968722-Morpholino-5-nitropyridineYield 95%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

In a round-bottom flask, to a dichloromethane (125 mL) solution of 2-bromo-5-nitropyridine (5 g, 24.6 mmol), morpholine (5.4 mL, 61.5 mmol) was added. The reaction was refluxed for 4 hr, then cooled to room temperature. The solution was subsequently washed with saturated aqueous sodium bicarbonate solution and brine. The organic layer was dried (Na2SO4), filtered, and the solvent was removed in vacuo. 4-(5-Nitropyridin-2-yl)morpholine, a yellow solid, was obtained: 4.9 g (95% yield); 1H NMR (300 MHz, DMSO) δ 8.95 (d, J=2.7, 1H), 8.22 (dd, J=2.7, 9.6, 1H), 6.92 (d, J=9.6, 1H), 3.74-3.65 (m, 8H); LCMS (M+) m/z 210.34.

Workup

  1. temperatureThe reaction was refluxed for 4 hr
  2. washThe solution was subsequently washed with saturated aqueous sodium bicarbonate solution and brine
  3. dry with materialThe organic layer was dried (Na2SO4)
  4. filtrationfiltered
  5. customthe solvent was removed in vacuo

Sources & evidence

ORD record
ord-24d1665cd9614b3aa9735ab28b60c550
Source dataset
uspto-grants-2013_08
Patent number
US08507675B2

Reaction notes

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