Diisopropylethylamine → (S)-2-[4-(3-ethoxy-2-fluoro-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 19114Notes

Reaction equation

HRID 19114 reaction equation
[CH2:1]([O:3][C:4]1[C:5]([F:25])=[C:6]([CH:22]=[CH:23][CH:24]=1)[O:7][C:8]1[CH2:12][N:11]([C@@H:13]([CH2:17][CH:18]([CH3:20])[CH3:19])[C:14]([OH:16])=O)[C:10](=[O:21])[CH:9]=1)[CH3:2].[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:14](=[O:16])[C@@H:13]([N:11]3[CH2:12][C:8]([O:7][C:6]4[CH:22]=[CH:23][CH:24]=[C:4]([O:3][CH2:1][CH3:2])[C:5]=4[F:25])=[CH:9][C:10]3=[O:21])[CH2:17][CH:18]([CH3:20])[CH3:19])=[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 66893599HCID 66893599, compound

Product 1

HCID 86635231(S)-2-[4-(3-ethoxy-2-fluoro-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 87.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of (S)-2-[4-(3-ethoxy-2-fluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (prepared as in Example 114, 570 mg, 1.62 mmol) in N,N-dimethylformamide (10 mL) was added 1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-ylamine (prepared as in Example 49, 382 mg, 1.94 mmol) and benzotriazol-1-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate (1.43 g, 3.23 mmol). The mixture was stirred at 0° C. and N,N-diisopropylethylamine (0.417 g, 3.23 mmol) was added. The mixture was stirred at room temperature for 4 h 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, 10% to 80% ethyl acetate/hexanes) which afforded (S)-2-[4-(3-ethoxy-2-fluoro-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 (0.750 g, 87%) as a white solid.

Workup

  1. stirringThe mixture was stirred at room temperature for 4 h
  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, 10% to 80% ethyl acetate/hexanes) which

Sources & evidence

ORD record
ord-56eb754100494575bda9ce0e9605ac1c
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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