Diisopropylethylamine → N-[1-(4-fluorophenyl)-5-methylpyrazol-4-yl]-2-[2-methyl-4-(trifluoromethyl)imidazol-1-yl]propanamide

HRID 1754356Notes

Reaction equation

HRID 1754356 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([CH3:13])=[C:11]([NH2:14])[CH:10]=[N:9]2)=[CH:4][CH:3]=1.[CH3:15][C:16]1[N:17]([CH:25]([CH3:29])[C:26](O)=[O:27])[CH:18]=[C:19]([C:21]([F:24])([F:23])[F:22])[N:20]=1.C(N(C(C)C)CC)(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.O>[F:1][C:2]1[CH:3]=[CH:4][C:5]([N:8]2[C:12]([CH3:13])=[C:11]([NH:14][C:26](=[O:27])[CH:25]([N:17]3[CH:18]=[C:19]([C:21]([F:22])([F:24])[F:23])[N:20]=[C:16]3[CH3:15])[CH3:29])[CH:10]=[N:9]2)=[CH:6][CH:7]=1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 608668381-(4-fluorophenyl)-5-methyl-1H-pyrazol-4-amineHCID 867116772-[2-Methyl-4-(trifluoromethyl)imidazol-1-yl]propanoic acid

Product 1

HCID 76902772N-[1-(4-fluorophenyl)-5-methylpyrazol-4-yl]-2-[2-methyl-4-(trifluoromethyl)imidazol-1-yl]propanamideYield 24%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 1-(4-fluorophenyl)-5-methylpyrazol-4-amine (0.03 g, 0.16 mmol) in DMF (1.0 mL) was added 2-[2-methyl-4-(trifluoromethyl)imidazol-1-yl]propanoic acid (0.035 g, 0.16 mmol), followed by diisopropylethylamine (0.042 g, 0.32 mmol) and HATU (0.067 g, 0.18 mmol). After stirring at room temperature for 1 h, the reaction was diluted with water, and the aqueous layer was extracted with ethyl acetate (2×5 mL). The combined organic layers were washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo. The resulting crude product was purified by reverse phase HPLC (C18 column, acetonitrile-H2O with 0.1% TFA as eluent) to give the title compound as a white solid (0.015 g, 0.038 mmol, 24%). 1H NMR (400 MHz, CDCl3) δ 8.93 (s, 1H), 7.93 (s, 1H), 7.81 (d, J=1.3 Hz, 1H), 7.42-7.32 (m, 2H), 7.24-7.14 (m, 2H), 5.35 (q, J=6.8 Hz, 1H), 2.48 (s, 3H), 2.19 (s, 3H), 1.86 (d, J=7.0 Hz, 3H); MS: (ES) m/z calculated for C18H17F4N5O [M+H]+ 396.1, found 396.1.

Workup

  1. extractionthe aqueous layer was extracted with ethyl acetate (2×5 mL)
  2. washThe combined organic layers were washed with brine
  3. dry with materialdried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe resulting crude product was purified by reverse phase HPLC (C18 column, acetonitrile-H2O with 0.1% TFA as eluent)

Sources & evidence

ORD record
ord-ab260a03d8a54b6e9422682b77c6d24f
Source dataset
uspto-grants-2015_10
Patent number
US09169248B2

Reaction notes

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