Diisopropylethylamine → HCID 57520015, compound

HRID 1897038Notes

Reaction equation

HRID 1897038 reaction equation
[CH3:1][C:2]1[O:6][N:5]=[C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[C:3]=1[CH2:13][O:14][C:15]1[CH:23]=[CH:22][C:18]([C:19]([OH:21])=O)=[CH:17][N:16]=1.F[B-](F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1.C(N(CC)C(C)C)(C)C.[CH3:55][N:56]1[CH2:61][CH2:60][CH:59]([NH2:62])[CH2:58][CH2:57]1>CN(C=O)C>[CH3:1][C:2]1[O:6][N:5]=[C:4]([C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=2)[C:3]=1[CH2:13][O:14][C:15]1[CH:23]=[CH:22][C:18]([C:19]([NH:62][CH:59]2[CH2:60][CH2:61][N:56]([CH3:55])[CH2:57][CH2:58]2)=[O:21])=[CH:17][N:16]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 27375314-Amino-1-methylpiperidineHCID 665992136-(5-Methyl-3-phenyl-isoxazol-4-ylmethoxy)-nicotinic acid

Product 1

HCID 57520015HCID 57520015, compoundYield 72.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 6-(5-methyl-3-phenyl-isoxazol-4-ylmethoxy)-nicotinic acid (100 mg, 0.32 mmol) in DMF (2 mL) were added 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (114 mg, 0.35 mmol), N,N-diisopropyl ethyl amine (275 μL, 1.6 mmol) and 1-methylpiperidin-4-amine (41 mg, 0.35 mmol). The resulting reaction mixture was stirred overnight at room temperature. Concentration and purification by preparative HPLC on reversed phase eluting with acetonitrile/water [0.1% aq NH3 (25%)]. Then the residue was partitioned with ethyl acetate and water, the organic extract was washed with aqueous sodium hydrogen carbonate (saturated) dried over sodium sulfate and concentrated to afford the title compound (94 mg, 72%) which was obtained as a white solid. MS: m/e=407.5 [M+H]+.

Workup

  1. customThe resulting reaction mixture
  2. concentrationConcentration and purification by preparative HPLC on reversed phase
  3. washeluting with acetonitrile/water [0.1% aq NH3 (25%)]
  4. customThen the residue was partitioned with ethyl acetate and water
  5. extractionthe organic extract
  6. washwas washed with aqueous sodium hydrogen carbonate (saturated)
  7. dry with materialdried over sodium sulfate
  8. concentrationconcentrated

Sources & evidence

ORD record
ord-d78a9bd322e64c6594223a43e96d3923
Source dataset
uspto-grants-2013_08
Patent number
US08518974B2

Reaction notes

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