Diisopropylethylamine → HCID 66898996, compound

HRID 19312Notes

Reaction equation

HRID 19312 reaction equation
[Cl:1][C:2]1[CH:23]=[CH:22][CH:21]=[CH:20][C:3]=1[O:4][C:5]1[CH2:9][N:8]([C@@H:10]([CH2:14][C:15]([F:18])([F:17])[CH3:16])[C:11]([OH:13])=O)[C:7](=[O:19])[CH:6]=1.[CH3:24][C:25]1([CH3:37])[O:29][C@H:28]([CH2:30][N:31]2[CH:35]=[CH:34][C:33]([NH2:36])=[N:32]2)[CH2:27][O:26]1.C(N(CC)C(C)C)(C)C.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1>CN(C)C=O.C(OCC)(=O)C>[CH3:24][C:25]1([CH3:37])[O:29][C@H:28]([CH2:30][N:31]2[CH:35]=[CH:34][C:33]([NH:36][C:11](=[O:13])[C@@H:10]([N:8]3[CH2:9][C:5]([O:4][C:3]4[CH:20]=[CH:21][CH:22]=[CH:23][C:2]=4[Cl:1])=[CH:6][C:7]3=[O:19])[CH2:14][C:15]([F:18])([F:17])[CH3:16])=[N:32]2)[CH2:27][O:26]1

Participants

7

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 66894718HCID 66894718, compound

Product 1

HCID 66898996HCID 66898996, compoundYield 40.3%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
25 °C

Procedure

A solution of (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4,4-difluoro-pentanoic acid (117 mg, 0.34 mmol) and 1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-ylamine (prepared as in Example 49, 82 mg, 0.42 mmol) in N,N-dimethylformamide (3 mL) was treated with N,N-diisopropyethylamine (170 μL, 1.02 mmol) and (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate (225 mg, 0.51 mmol) and stirred overnight at 25° C. After this time, the mixture was diluted with ethyl acetate (25 mL) and washed with a saturated aqueous solution of ammonium chloride (25 mL), saturated aqueous solution of sodium bicarbonate (25 mL) and a saturated aqueous solution of sodium chloride (25 mL) dried over sodium sulfate and concentrated with silica gel (2 g). Purification by Biotage flash chromatography (Aspire 40 g column, 20% ethyl acetate/hexanes) afforded (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4,4-difluoro-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide (72 mg, 40%) as a white foam: HR-ES-MS m/z calculated for C24H27N4O5ClF2 [M+Na]+ 547.1530, observed 547.1531.

Workup

  1. washwashed with a saturated aqueous solution of ammonium chloride (25 mL), saturated aqueous solution of sodium bicarbonate (25 mL)
  2. dry with materiala saturated aqueous solution of sodium chloride (25 mL) dried over sodium sulfate
  3. concentrationconcentrated with silica gel (2 g)
  4. customPurification by Biotage flash chromatography (Aspire 40 g column, 20% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-43cab93e15c34a319d97ef3ad682f4bf
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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