1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-3-(tetrahydro-pyran-4-yl)-propionamide

HRID 18980Notes

Reaction equation

HRID 18980 reaction equation
COC(=O)C1[CH:9]=[CH:8][C:7]([NH:10][C:11](=[O:35])[CH:12]([N:20]2[CH2:24][C:23]([O:25][C:26]3[C:31]([F:32])=[CH:30][CH:29]=[CH:28][C:27]=3[F:33])=[CH:22][C:21]2=[O:34])[CH2:13][CH:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)=[N:6]C=1.CN(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1.NC1C=C[N:61]([CH2:64][C:65]([CH3:68])([OH:67])[CH3:66])N=1>ClCCl>[F:32][C:31]1[CH:30]=[CH:29][CH:28]=[C:27]([F:33])[C:26]=1[O:25][C:23]1[CH2:24][N:20]([CH:12]([CH2:13][CH:14]2[CH2:15][CH2:16][O:17][CH2:18][CH2:19]2)[C:11]([NH:10][C:7]2[CH:8]=[CH:9][N:61]([CH2:64][C:65]([OH:67])([CH3:68])[CH3:66])[N:6]=2)=[O:35])[C:21](=[O:34])[CH:22]=1

Participants

6

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 442537566-[2-[4-(2,6-Difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-3-(tetrahydro-pyran-4-yl)-propionylamino]-nicotinic acid methyl esterHCID 593449381-(3-amino-1H-pyrazol-1-yl)-2-methylpropan-2-ol

Product 1

HCID 442538942-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-3-(tetrahydro-pyran-4-yl)-propionamideYield 68.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
25 °C

Procedure

A solution of 2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-3-(tetrahydro-pyran-4-yl)-propionic acid (as prepared in Example 40, 200 mg, 0.54 mmol) in dichloromethane (10 mL) was treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (85 mg, 0.55 mmol) and 1-hydroxybenzotriazole (80 mg, 0.57 mmol). The reaction mixture was stirred at 25° C. for 2 h followed by the addition of 1-(3-amino-pyrazol-1-yl)-2-methyl-propan-2-ol (prepared in U.S. Pat. Appl. US2008021032 Example 80, 101 mg, 0.65 mmol). The reaction mixture was stirred for 18 h at 25° C., under nitrogen. The reaction mixture was diluted with dichloromethane, washed with 2N aqueous hydrochloric acid, saturated sodium bicarbonate solution, a saturated sodium chloride solution and dried over magnesium sulfate. The organic layer was concentrated, and the crude product was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 12 g; 0% to 10% methanol/dichloromethane) to afford 2-[4-(2,6-difluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-3-(tetrahydro-pyran-4-yl)-propionamide (186 mg, 68%) as a white solid: LR-ES-MS m/z calculated for C25H30F2N4O5 [M]+ 504, observed [M+H]+ 505; 1H NMR (300 MHz, DMSO-d6) δ ppm 1.05 (s, 3H) 1.06 (s, 3H) 1.11-1.52 (m, 3H) 1.52-1.74 (m, 3H) 1.74-1.88 (m, 1H) 3.07-3.32 (m, 2H) 3.75-3.87 (m, 2H) 3.89 (s, 2H) 4.33 (d, J=19.0 Hz, 1H) 4.65 (d, J=19.0 Hz, 1H) 4.68 (s, 1H) 4.91 (dd, J=10.6, 4.5 Hz, 1H) 5.04 (s, 1H) 6.45 (d, J=2.2 Hz, 1H) 7.26-7.51 (m, 3H) 7.54 (d, J=2.2 Hz, 1H) 10.83 (s, 1H).

Workup

  1. stirringThe reaction mixture was stirred for 18 h at 25° C., under nitrogen
  2. washwashed with 2N aqueous hydrochloric acid, saturated sodium bicarbonate solution
  3. dry with materiala saturated sodium chloride solution and dried over magnesium sulfate
  4. concentrationThe organic layer was concentrated
  5. customthe crude product was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 12 g; 0% to 10% methanol/dichloromethane)

Sources & evidence

ORD record
ord-6a7bf7d7faa9460baac1dc19ce807968
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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