Dimethylformamide → 4-[(4-[5-[3-Chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-methylphenyl)carbonyl]-1-(3,3,3-trifluoropropyl)piperazine-2,6-dione

HRID 63844

Reaction equation

HRID 63844 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2([C:34]([F:37])([F:36])[F:35])[O:16][N:15]=[C:14]([C:17]3[CH:22]=[CH:21][C:20]([C:23]([N:25]4[CH2:30][C:29](=[O:31])[NH:28][C:27](=[O:32])[CH2:26]4)=[O:24])=[C:19]([CH3:33])[CH:18]=3)[CH2:13]2)[CH:5]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:7]=1.[F:38][C:39]([F:44])([F:43])[CH2:40][CH2:41]I.CN(C)C=O.C(=O)([O-])[O-].[K+].[K+]>O.CC#N>[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2([C:34]([F:35])([F:36])[F:37])[O:16][N:15]=[C:14]([C:17]3[CH:22]=[CH:21][C:20]([C:23]([N:25]4[CH2:30][C:29](=[O:31])[N:28]([CH2:41][CH2:40][C:39]([F:44])([F:43])[F:38])[C:27](=[O:32])[CH2:26]4)=[O:24])=[C:19]([CH3:33])[CH:18]=3)[CH2:13]2)[CH:5]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:7]=1

Participants

7

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 1561651,1,1-Trifluoro-3-iodopropaneHCID 1180473454-[(4-[5-[3-Chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-methylphenyl)carbonyl]piperazine-2,6-dione

Product 1

HCID 1180469544-[(4-[5-[3-Chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-methylphenyl)carbonyl]-1-(3,3,3-trifluoropropyl)piperazine-2,6-dione

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Procedure

Into a 50-mL round-bottom flask, was placed 4-[(4-[5-[3-chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-methylphenyl)carbonyl]piperazine-2,6-dione (200 mg, 0.36 mmol, 1.00 equiv), 1,1,1-trifluoro-3-iodopropane (163.5 mg, 0.73 mmol, 2.00 equiv), N,N-dimethylformamide (10 mL), potassium carbonate (100.7 mg, 0.73 mmol, 2.00 equiv). The resulting solution was stirred overnight at room temperature. The resulting solution was diluted with 60 mL of H2O. The resulting solution was extracted with 3×20 mL of ethyl acetate and the organic layers combined. The resulting mixture was washed with 4×40 mL of brine. The mixture was dried over anhydrous sodium sulfate. The resulting mixture was concentrated under vacuum. The crude product (85 mg) was purified by Prep-HPLC. This resulted in 39.5 g (17%) of 4-[(4-[5-[3-chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-methylphenyl)carbonyl]-1-(3,3,3-trifluoropropyl)piperazine-2,6-dione as a white solid. (ES, m/z): [M+CH3CN]+ 685.0; 1H NMR (300 MHz, CDCl3): δ 7.85 (s, 1H), 7.78 (s, 1H), 7.72 (s, 1H), 7.61 (d, J=8.7 Hz, 2H), 7.28-7.23 (m, 1H), 4.79 (s, 2H), 4.19-4.10 (m, 5H), 3.75 (d, J=17.4 Hz, 1H), 2.49-2.41 (m, 2H), 2.32 (s, 3H)

Workup

  1. customInto a 50-mL round-bottom flask, was placed
  2. extractionThe resulting solution was extracted with 3×20 mL of ethyl acetate
  3. washThe resulting mixture was washed with 4×40 mL of brine
  4. dry with materialThe mixture was dried over anhydrous sodium sulfate
  5. concentrationThe resulting mixture was concentrated under vacuum
  6. customThe crude product (85 mg) was purified by Prep-HPLC
  7. customThis resulted in 39.5 g (17%) of 4-[(4-[5-[3-chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-methylphenyl)carbonyl]-1-(3,3,3-trifluoropropyl)piperazine-2,6-dione as a white solid

Sources & evidence

ORD record
ord-3c0edb98e0984d3f84d2f6393ee72000
Source dataset
uspto-grants-2016_09
Patent number
US09447084B2

Linked notes

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