Diisopropylethylamine → (S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide

HRID 19124Notes

Reaction equation

HRID 19124 reaction equation
[F:1][C:2]1[C:22]([O:23][CH3:24])=[CH:21][CH:20]=[C:19]([F:25])[C:3]=1[O:4][C:5]1[CH2:9][N:8]([C@@H:10]([CH2:14][CH:15]([CH3:17])[CH3:16])[C:11](O)=[O:12])[C:7](=[O:18])[CH:6]=1.[CH3:26][C:27]1([CH3:39])[O:31][C@H:30]([CH2:32][N:33]2[CH:37]=[CH:36][C:35]([NH2:38])=[N:34]2)[CH2:29][O:28]1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.C(N(CC)C(C)C)(C)C>CN(C)C=O>[CH3:26][C:27]1([CH3:39])[O:31][C@H:30]([CH2:32][N:33]2[CH:37]=[CH:36][C:35]([NH:38][C:11](=[O:12])[C@@H:10]([N:8]3[CH2:9][C:5]([O:4][C:3]4[C:19]([F:25])=[CH:20][CH:21]=[C:22]([O:23][CH3:24])[C:2]=4[F:1])=[CH:6][C:7]3=[O:18])[CH2:14][CH:15]([CH3:17])[CH3:16])=[N:34]2)[CH2:29][O:28]1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 59344941(R)-1-((2,2-Dimethyl-1,3-dioxolan-4-yl)methyl)-1H-pyrazol-3-amineHCID 66894950(S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid

Product 1

HCID 57920095(S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amideYield 64.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of (S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (0.200 g, 0.56 mmol) in N,N-dimethylformamide (7 mL) was added 1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-ylamine (prepared as in Example 49, 0.139 g, 0.70 mmol) and benzotriazol-1-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate (0.374 g, 0.85 mmol). The mixture was stirred at 0° C. and N,N-diisopropylethylamine (0.193 g, 1.49 mmol) was added. The mixture was stirred at room temperature overnight and the solvents were evaporated. The residue was treated with ethyl acetate and ammonium chloride solution, and the organic layer separated. The organic layer was washed with brine and dried over sodium sulfate. The solvents were evaporated and the residue was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g, 50% to 90% ethyl acetate/hexanes) which afforded (S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide (0.193 g, 64%) as a pale brown solid: HR-ES-MS m/z calculated for C26H32F2N4O6 [M+H]+ 535.2363, observed 535.2363, 1H NMR (300 MHz, DMSO-d6) δ ppm 1.00 0.90 (d, J=6.3 Hz, 3H), 0.93 (d, J=6.3 Hz, 3H), 1.25 (s, 3H), 1.30 (s, 3 H), 1.36-1.50 (m, 1H), 1.50-1.65 (m, 1H), 1.69-1.84 (m, 1H), 3.73 (dd, J=8.4, 5.7 Hz, 1H), 3.87 (s, 3H), 4.00 (dd, J=8.4, 6.5 Hz, 1H), 4.11 (t, J=5.4 Hz, 2H), 4.27 (d, J=18.7 Hz, 1H), 4.35 (t, J=5.7 Hz, 1H), 4.62 (d, J=18.7 Hz, 1H), 4.88 (dd, J=10.6, 4.8 Hz, 1H), 5.06 (s, 1H), 6.43 (d, J=2.1 Hz, 1H), 7.18 (td, J=9.3, 5.1 Hz, 1H), 7.30 (td, J=9.5, 1.8 Hz, 1H), 7.60 (d, J=2.1 Hz, 1H), 10.82 (s, 1H).

Workup

  1. stirringThe mixture was stirred at room temperature overnight
  2. customthe solvents were evaporated
  3. additionThe residue was treated with ethyl acetate and ammonium chloride solution
  4. customthe organic layer separated
  5. washThe organic layer was washed with brine
  6. dry with materialdried over sodium sulfate
  7. customThe solvents were evaporated
  8. customthe residue was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g, 50% to 90% ethyl acetate/hexanes) which

Sources & evidence

ORD record
ord-d9de7ff450fb4f3eb49b6a8b74dcd756
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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