Diisopropylethylamine → (S)-3-cyclohexyl-N-[1-(2-methoxy-ethyl)-1H-pyrazol-3-yl]-2-[2-oxo-4-(2-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-propionamide

HRID 19025Notes

Reaction equation

HRID 19025 reaction equation
[CH:1]1([CH2:7][C@H:8]([N:12]2[CH2:16][C:15]([O:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=3[C:24]([F:27])([F:26])[F:25])=[CH:14][C:13]2=[O:28])[C:9]([OH:11])=O)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.ClC1C(F)=C(C(F)=CC=1)OC1CN([C@@H](CC2CCCCC2)C([NH:42][C:43]2[CH:47]=[CH:46][N:45]([CH2:48][C:49]([OH:52])(C)C)[N:44]=2)=O)C(=O)C=1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=C[C:76]=2N=N1.C(N(CC)C(C)C)(C)C>CN(C)C=O.C(OCC)(=O)C>[CH:1]1([CH2:7][C@H:8]([N:12]2[CH2:16][C:15]([O:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=3[C:24]([F:26])([F:25])[F:27])=[CH:14][C:13]2=[O:28])[C:9]([NH:42][C:43]2[CH:47]=[CH:46][N:45]([CH2:48][CH2:49][O:52][CH3:76])[N:44]=2)=[O:11])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 44251878(S)-2-[4-(3-chloro-2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-3-cyclohexyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-propionamideHCID 66893512(S)-3-cyclohexyl-2-[2-oxo-4-(2-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-propionic acid

Product 1

HCID 57920176(S)-3-cyclohexyl-N-[1-(2-methoxy-ethyl)-1H-pyrazol-3-yl]-2-[2-oxo-4-(2-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-propionamide

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
25 °C

Procedure

A solution of (S)-3-cyclohexyl-2-[2-oxo-4-(2-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-propionic acid (prepared as in Example 32, 307 mg, 0.77 mmol) in N,N-dimethylformamide (4 mL) was treated with 1-(2-methoxy-ethyl)-1H-pyrazol-3-ylamine (prepared in U.S. Pat. Appl. US2008021032 Example 72, 130 mg, 0.92 mmol), benzotriazol-1-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate (663 mg, 1.5 mmol) and N,N-diisopropylethylamine (193 mg, 1.5 mmol). The reaction mixture was stirred for 4 h at 25° C., under nitrogen. The reaction mixture was diluted with ethyl acetate, washed with saturated ammonium chloride, water, a saturated sodium chloride solution and dried over sodium sulfate. The organic layer was concentrated, and the crude product was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 12 g, 20% to 70% ethyl acetate/hexanes) to afford (S)-3-cyclohexyl-N-[1-(2-methoxy-ethyl)-1H-pyrazol-3-yl]-2-[2-oxo-4-(2-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-propionamide. This material was dissolved in dichloromethane (4 mL) and treated with hydrogen chloride in diethyl ether (1 M, 2 mL). Solvents were evaporated and the residue was triturated with diethyl ether. The solid was filtered to give (S)-3-cyclohexyl-N-[1-(2-methoxy-ethyl)-1H-pyrazol-3-yl]-2-[2-oxo-4-(2-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-propionamide hydrochloride (133 mg, 31%) as a light yellow solid: LR-ES-MS m/z calculated for C26H23F3N4O4 [M]+ 520, observed [M+H]+ 521; 1H NMR (300 MHz, DMSO-d6) δ ppm 0.68-1.40 (m, 6H) 1.40-1.83 (m, 7H) 3.19 (s, 3H) 3.62 (t, J=5.2 Hz, 2H) 4.12 (t, J=5.2 Hz, 2H) 4.16 (d, J=18.7 Hz, 1H) 4.57 (d, J=18.7 Hz, 1H) 4.88 (dd, J=10.6, 5.4 Hz, 1H) 4.94 (s, 1H) 6.39 (d, J=2.1 Hz, 1H) 7.51 (t, J=7.2 Hz, 1H) 7.55 (d, J=2.1 Hz, 1H) 7.64 (d, J=7.8 Hz, 1H) 7.73-7.90 (m, 2H) 10.75 (s, 1H).

Workup

  1. washwashed with saturated ammonium chloride, water
  2. dry with materiala saturated sodium chloride solution and dried over sodium sulfate
  3. concentrationThe organic layer was concentrated
  4. customthe crude product was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 12 g, 20% to 70% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-7f225a565afc41c383a5ef8209ebb6f8
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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