Diisopropylethylamine → (S)-2-[4-(2,6-difluoro-3-isopropoxy-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 19148Notes

Reaction equation

HRID 19148 reaction equation
[F:1][C:2]1[C:22]([O:23][CH:24]([CH3:26])[CH3:25])=[CH:21][CH:20]=[C:19]([F:27])[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]([OH:13])=O)[C:7](=[O:18])[CH:6]=1.[CH3:28][C:29]1([CH3:41])[O:33][C@H:32]([CH2:34][N:35]2[CH:39]=[CH:38][C:37]([NH2:40])=[N:36]2)[CH2:31][O:30]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>[CH3:28][C:29]1([CH3:41])[O:33][C@H:32]([CH2:34][N:35]2[CH:39]=[CH:38][C:37]([NH:40][C:11](=[O:13])[C@@H:10]([N:8]3[CH2:9][C:5]([O:4][C:3]4[C:19]([F:27])=[CH:20][CH:21]=[C:22]([O:23][CH:24]([CH3:25])[CH3:26])[C:2]=4[F:1])=[CH:6][C:7]3=[O:18])[CH2:14][CH:15]([CH3:16])[CH3:17])=[N:36]2)[CH2:31][O:30]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 66893940HCID 66893940, compound

Product 1

HCID 86635232(S)-2-[4-(2,6-difluoro-3-isopropoxy-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 64.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of (S)-2-[4-(2,6-difluoro-3-isopropoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (0.530 g, 1.38 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, 0.354 g, 1.79 mmol) and benzotriazol-1-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate (1.21 g, 2.73 mmol). The mixture was stirred at 0° C. and N,N-diisopropylethylamine (0.356 g, 2.75 mmol) was added. The mixture was stirred at room temperature for 5 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 25 g, 10% to 70% ethyl acetate/hexanes) which afforded (S)-2-[4-(2,6-difluoro-3-isopropoxy-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 (0.500 g, 64%) as a off-white solid.

Workup

  1. stirringThe mixture was stirred at room temperature for 5 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 25 g, 10% to 70% ethyl acetate/hexanes) which

Sources & evidence

ORD record
ord-70e453b3375f489197bd5bc85c9253c0
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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