Diisopropylethylamine → 8-Fluoro-2-methyl-5-{4-[2-(3-nitrophenyl)ethyl]-1-piperazinyl}quinoline

HRID 2373604Notes

Reaction equation

HRID 2373604 reaction equation
C(N(CC)C(C)C)(C)C.[CH3:10][C:11]1[CH:20]=[CH:19][C:18]2[C:13](=[C:14]([F:27])[CH:15]=[CH:16][C:17]=2[N:21]2[CH2:26][CH2:25][NH:24][CH2:23][CH2:22]2)[N:12]=1.CS(O[CH2:33][CH2:34][C:35]1[CH:40]=[CH:39][CH:38]=[C:37]([N+:41]([O-:43])=[O:42])[CH:36]=1)(=O)=O>CN(C)C=O>[F:27][C:14]1[CH:15]=[CH:16][C:17]([N:21]2[CH2:26][CH2:25][N:24]([CH2:33][CH2:34][C:35]3[CH:40]=[CH:39][CH:38]=[C:37]([N+:41]([O-:43])=[O:42])[CH:36]=3)[CH2:23][CH2:22]2)=[C:18]2[C:13]=1[N:12]=[C:11]([CH3:10])[CH:20]=[CH:19]2

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 219738843-Nitrophenethyl methanesulfonateHCID 574443218-Fluoro-2-methyl-5-piperazin-1-yl-quinoline

Product 1

HCID 574443228-Fluoro-2-methyl-5-{4-[2-(3-nitrophenyl)ethyl]-1-piperazinyl}quinolineYield 46%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

N,N-Diisopropylethylamine (0.25 mL; 3 eq) was added to a solution of 2-methyl-5-(1-piperazinyl)-8-fluoro quinoline (0.170 g; 1 eq) and 2-(3-nitrophenyl)ethyl methanesulfonate (D4) (0.17 g; 1 eq) in dimethylformamide (4.0 mL). The reaction mixture was heated to 100° C. for 10 hours. The dark solution was cooled to room temperature and concentrated under reduced pressure. The residue was diluted with water (3 mL) and brine (1 mL) and extracted into ethyl acetate (3×3 mL). The combined organic layers were dried over sodium sulfate and concentrated under reduced pressure. The crude was purified by flash chromatography on silica gel, eluting with a gradient from dichloromethane to dichloromethane-methanol (98:2) affording the title compound in 46% yield (0.126 g).

Workup

  1. temperatureThe dark solution was cooled to room temperature
  2. concentrationconcentrated under reduced pressure
  3. additionThe residue was diluted with water (3 mL) and brine (1 mL)
  4. extractionextracted into ethyl acetate (3×3 mL)
  5. dry with materialThe combined organic layers were dried over sodium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe crude was purified by flash chromatography on silica gel
  8. washeluting with a gradient from dichloromethane to dichloromethane-methanol (98:2)

Sources & evidence

ORD record
ord-8e051301372649d88621043d36639b84
Source dataset
uspto-grants-2008_12
Patent number
US07459456B2

Reaction notes

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