Water → 5-(4-Chlorophenyl)-2-[(5-chloro-2-thienyl)methyl]-4-[(2S)-3,3,3-trifluoro-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazol-3-one

HRID 714623Notes

Reaction equation

HRID 714623 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([CH2:14][C@H:15]([OH:20])[C:16]([F:19])([F:18])[F:17])[C:10](=[O:13])[NH:11][N:12]=2)=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[Cl:27][C:28]1[S:29][C:30]([CH2:33]Cl)=[CH:31][CH:32]=1.O>C(#N)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([CH2:14][C@H:15]([OH:20])[C:16]([F:18])([F:19])[F:17])[C:10](=[O:13])[N:11]([CH2:33][C:30]3[S:29][C:28]([Cl:27])=[CH:32][CH:31]=3)[N:12]=2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 5830792-Chloro-5-(chloromethyl)thiopheneHCID 595368365-(4-Chlorophenyl)-4-[(2S)-3,3,3-trifluoro-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazol-3-one

Product 1

HCID 674115935-(4-Chlorophenyl)-2-[(5-chloro-2-thienyl)methyl]-4-[(2S)-3,3,3-trifluoro-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazol-3-one

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

119 mg (0.39 mmol) of the compound from Example 5A and 107 mg (0.77 mmol) of potassium carbonate were dissolved in 5 ml of acetonitrile, and 65 mg (0.39 mmol) of 2-chloro-5-(chloromethyl)thiophene were added. The mixture was stirred under reflux for 2 h. After cooling to RT, 10 ml of water were added and the mixture was extracted three times with in each case 10 ml of ethyl acetate. The combined organic phases were washed with 10 ml of saturated sodium chloride solution, dried over sodium sulfate, filtered and concentrated under reduced pressure. The crude product was purified by chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 10:1→8:1→5:1→1:1). This gave 114 mg (65% of theory) of the target compound.

Workup

  1. temperatureunder reflux for 2 h
  2. extractionthe mixture was extracted three times with in each case 10 ml of ethyl acetate
  3. washThe combined organic phases were washed with 10 ml of saturated sodium chloride solution
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe crude product was purified by chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 10:1→8:1→5:1→1:1)

Sources & evidence

ORD record
ord-482c034ce8c24ca1b42a6c307ceabc2c
Source dataset
uspto-grants-2015_11
Patent number
US09187466B2

Reaction notes

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