Potassium Carbonate → HCID 16004806, compound

HRID 2101323Notes

Reaction equation

HRID 2101323 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:13]=[CH:12][N:11]3[C:14](=[O:17])[NH:15][N:16]=[C:10]3[C:9]=2[C:18]2[CH:23]=[CH:22][N:21]=[CH:20][CH:19]=2)=[CH:4][CH:3]=1.Cl[CH2:25][C:26]1[C:27]([CH3:36])=[N:28][C:29]([C:32]([F:35])([F:34])[F:33])=[CH:30][CH:31]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:13]=[CH:12][N:11]3[C:14](=[O:17])[N:15]([CH2:25][C:26]4[C:27]([CH3:36])=[N:28][C:29]([C:32]([F:35])([F:33])[F:34])=[CH:30][CH:31]=4)[N:16]=[C:10]3[C:9]=2[C:18]2[CH:19]=[CH:20][N:21]=[CH:22][CH:23]=2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 577993927-(4-chlorophenyl)-8-(pyridin-4-yl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one2×HCID 598348153-(Chloromethyl)-2-methyl-6-(trifluoromethyl)pyridine

Product 1

HCID 16004806HCID 16004806, compoundYield 53%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 7-(4-chlorophenyl)-8-(pyridin-4-yl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one (162 mg, 0.50 mmol) and 3-(chloromethyl)-2-methyl-6-(trifluoromethyl)pyridine (137 mg, 0.65 mmol) in anhydrous DMF (1.5 mL) at room temperature was added anhydrous K2CO3 (105 mg, 0.75 mmol). The resulting yellow suspension was stirred at 80° C. for 5.5 h. Analysis by HPLC/MS indicated that starting 7-(4-chlorophenyl)-8-(pyridin-4-yl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one had been consumed. After cooling to room temperature, the reaction mixture was diluted with water and extracted with EtOAc (20 mL×3). The combined EtOAc extracts were washed with water, then saturated aqueous NaCl, dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude product was purified using a silica gel cartridge (40 g) eluted with a gradient of ethyl acetate (0-70%) in hexanes to afford 130 mg (53%) of the title compound as a light brown foam. The product was further purified using preparative reverse phase HPLC (Phenomenex Luna 5 μm C-18 21.2×100 mm column eluted with a linear gradient of 50% to 90% B over 10 min (A=0.1% trifluoroacetic acid, 90% water, 10% methanol and B=0.1% trifluoroacetic acid, 90% methanol, 10% water) with flow rate at 20 mL/min and UV detection at 220 nm). The desired fractions were concentrated under reduced pressure. The resulting residue was dissolved in EtOAc, washed with saturated aqueous Na2CO3 once, water twice, then saturated aqueous NaCl, dried over Na2SO4 and evaporated. The residue was dissolved in acetonitrile, frozen and lyophilized to afford the title compound as a light yellow powder. HPLC/MS: retention time=2.80 min, [M+H]+=496.2. 1H NMR (CDCl3, 400 MHz): δ 8.56 (d, J=6.2 Hz, 2H), 7.87 (d, J=7.0 Hz, 1H), 7.68 (d, J=7.9 Hz, 1H), 7.49 (d, J=7.9 Hz, 1H), 7.27 (d, J=8.8 Hz, 2H), 7.17 (d, J=6.2 Hz, 2H), 7.05 (d, J=8.8 Hz, 2H), 6.66 (d, J=7.5 Hz, 1H), 5.23 (s, 2H), 2.75 (s, 3H).

Workup

  1. customhad been consumed
  2. temperatureAfter cooling to room temperature
  3. additionthe reaction mixture was diluted with water
  4. extractionextracted with EtOAc (20 mL×3)
  5. washThe combined EtOAc extracts were washed with water
  6. dry with materialsaturated aqueous NaCl, dried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe crude product was purified
  10. washeluted with a gradient of ethyl acetate (0-70%) in hexanes

Sources & evidence

ORD record
ord-62d3390d4c854fb78a57a6a6c2ffaf5f
Source dataset
uspto-grants-2009_08
Patent number
US07572808B2

Reaction notes

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