Potassium Carbonate → 1-[1-(4-Fluorophenyl)-5-isopropylpyrazol-4-yl]-3-[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]pyrrolidin-2-one

HRID 522319Notes

Reaction equation

HRID 522319 reaction equation
Br[CH:2]1[CH2:6][CH2:5][N:4]([C:7]2[CH:8]=[N:9][N:10]([C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)[C:11]=2[CH:12]([CH3:14])[CH3:13])[C:3]1=[O:22].[CH3:23][C:24]1[NH:28][N:27]=[C:26]([C:29]([F:32])([F:31])[F:30])[CH:25]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[F:21][C:18]1[CH:19]=[CH:20][C:15]([N:10]2[C:11]([CH:12]([CH3:14])[CH3:13])=[C:7]([N:4]3[CH2:5][CH2:6][CH:2]([N:28]4[C:24]([CH3:23])=[CH:25][C:26]([C:29]([F:32])([F:31])[F:30])=[N:27]4)[C:3]3=[O:22])[CH:8]=[N:9]2)=[CH:16][CH:17]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 1390771H-Pyrazole, 3-methyl-5-(trifluoromethyl)-HCID 867230343-Bromo-1-[1-(4-fluorophenyl)-5-isopropylpyrazol-4-yl]pyrrolidin-2-one

Product 1

HCID 867230331-[1-(4-Fluorophenyl)-5-isopropylpyrazol-4-yl]-3-[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]pyrrolidin-2-oneYield 80.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of 3-bromo-1-[1-(4-fluorophenyl)-5-isopropylpyrazol-4-yl]pyrrolidin-2-one (0.023 g, 0.063 mmol), 5-methyl-3-(trifluoromethyl)-1H-pyrazole (0.040 g, 0.27 mmol) and K2CO3 (0.060 g, 0.43 mmol) in DMF (1 mL) was stirred at 60° C. for 1 hr. It was then cooled to room temperature, quenched with water (30 mL) and extracted with EtOAc (100 mL). The organic layer was separated, dried over anhydrous sodium sulfate, concentrated in vacuo and purified by flash chromatography (SiO2, 0˜100% EtOAc/hexanes gradient elution) to give the title compound (0.022 g, 80%). 1H NMR (400 MHz, CDCl3) δ 7.52 (s, 1H), 7.37 (dd, J=9.2, 4.8 Hz, 2H), 7.17 (dd, J=8.6, 8.6 Hz, 2H), 6.32 (s, 1H), 5.05 (dd, J=9.2, 5.6 Hz, 1H), 4.07 (m, 1H), 3.80 (m, 1H), 2.84-3.02 (m, 2H), 2.74 (m, 1H), 2.45 (s, 3H), 1.21 (d, J=7.6 Hz, 3H), 1.11 (d, J=6.8 Hz, 3H); MS: (ES) m/z calculated for C21H21F4N5O [M+H]+ 436.1. found 436.1.

Workup

  1. temperatureIt was then cooled to room temperature
  2. customquenched with water (30 mL)
  3. extractionextracted with EtOAc (100 mL)
  4. customThe organic layer was separated
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated in vacuo
  7. custompurified by flash chromatography (SiO2, 0˜100% EtOAc/hexanes gradient elution)

Sources & evidence

ORD record
ord-0b9528e3c70447f8af9c9ace65251521
Source dataset
uspto-grants-2016_05
Patent number
US09328116B2

Reaction notes

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