Oxalyl chloride → N-((5-((2-acetamidopyridin-4-yl)oxy)pyridin-2-yl)carbamoyl)tetrahydro-2H-pyran-4-carboxamide

HRID 626546Notes

Reaction equation

HRID 626546 reaction equation
[O:1]1[CH2:6][CH2:5][CH:4]([C:7]([NH2:9])=[O:8])[CH2:3][CH2:2]1.C(Cl)(=O)[C:11](Cl)=[O:12].[NH2:16][C:17]1[N:22]=[CH:21][C:20]([O:23][C:24]2[CH:29]=[CH:28][N:27]=[C:26]([NH:30][C:31](=[O:33])[CH3:32])[CH:25]=2)=[CH:19][CH:18]=1>ClCCCl.C1COCC1>[C:31]([NH:30][C:26]1[CH:25]=[C:24]([O:23][C:20]2[CH:19]=[CH:18][C:17]([NH:16][C:11]([NH:9][C:7]([CH:4]3[CH2:5][CH2:6][O:1][CH2:2][CH2:3]3)=[O:8])=[O:12])=[N:22][CH:21]=2)[CH:29]=[CH:28][N:27]=1)(=[O:33])[CH3:32]

Participants

6

Reactant 3

HCID 65578Oxalyl chlorideHCID 13197203Oxane-4-carboxamideHCID 90410482N-(4-((6-aminopyridin-3-yl)oxy)pyridin-2-yl)acetamide

Product 1

HCID 86272277N-((5-((2-acetamidopyridin-4-yl)oxy)pyridin-2-yl)carbamoyl)tetrahydro-2H-pyran-4-carboxamideYield 52.4%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
80 °C

Procedure

A solution of Example B5 (0.095 g, 0.737 mmol) in DCE (3 mL) was treated with oxalyl chloride (0.129 mL, 1.474 mmol) and heated at 80° C. for 3 h. The mixture was cooled to RT, concentrated to dryness, treated with a solution of Example A2 (0.09 g, 0.368 mmol) and TEA (0.205 mL, 1.474 mmol) in THF (4 mL) and stirred at RT for 0.5 h. The mixture was treated with satd. NaHCO3, extracted with EtOAc (2×) and the combined organics were washed with brine, dried over Na2SO4, concentrated to dryness and purified via silica gel chromatography (MeOH/DCM). The material was suspended in MeCN/H2O, frozen and lyophilized to afford N-((5-((2-acetamidopyridin-4-yl)oxy)pyridin-2-yl)carbamoyl)tetrahydro-2H-pyran-4-carboxamide (77 mg, 52%) as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 11.05 (s, 1H), 10.88 (s, 1H), 10.56 (s, 1H), 8.24 (d, J=2.9 Hz, 1H), 8.18 (d, J=5.7 Hz, 1H), 8.07 (d, J=9.0 Hz, 1H), 7.72 (dd, J=9.0, 2.9 Hz, 1H), 7.64 (d, J=2.4 Hz, 1H), 6.68 (dd, J=5.7, 2.4 Hz, 1H), 3.87 (m, 2H), 3.29-3.25 (m, 2H), 2.72-2.64 (m, 1H), 2.02 (s, 3H), 1.71 (m, 2H), 1.66-1.54 (m, 2H); MS (ESI) m/z: 400.2 (M+H+).

Workup

  1. temperatureThe mixture was cooled to RT
  2. concentrationconcentrated to dryness
  3. additionThe mixture was treated with satd
  4. extractionNaHCO3, extracted with EtOAc (2×)
  5. washthe combined organics were washed with brine
  6. dry with materialdried over Na2SO4
  7. concentrationconcentrated to dryness
  8. custompurified via silica gel chromatography (MeOH/DCM)
  9. temperaturefrozen

Sources & evidence

ORD record
ord-4af7ef639ad744528129e59a9be4276a
Source dataset
uspto-grants-2016_04
Patent number
US09309224B2

Reaction notes

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