5-Methyl-3-phenylisoxazole-4-carboxylic acid → HCID 59170269, Verbindung

HRID 1446298

Reaktionsgleichung

Reaktionsgleichung von HRID 1446298
[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[C:13]([OH:15])=O.[NH:16]1[CH2:20][CH2:19][CH2:18][CH:17]1[CH2:21][C:22]1[CH:23]=[N:24][CH:25]=[CH:26][CH:27]=1.F[B-](F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C>CN(C)C=O>[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[C:13]([N:16]1[CH2:20][CH2:19][CH2:18][CH:17]1[CH2:21][C:22]1[CH:23]=[N:24][CH:25]=[CH:26][CH:27]=1)=[O:15]

Komponenten

6

Edukt 4

HCID 143435-Methyl-3-phenylisoxazole-4-carboxylic acidHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 32638763-(2-Pyrrolidinylmethyl)pyridine

Produkt 1

HCID 59170269HCID 59170269, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

5-Methyl-3-phenylisooxazole-4-carboxylic acid (40 mg, 0.197 mmol), 3-(pyrrolidin-2-ylmethyl)pyridine (50.5 mg, 0.215 mmol), O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (86.2 mg, 0.268 mmol) and diisopropylethylamine (25.4 mg, 0.197 mmol) were mixed in dimethylformamide (1.0 mL) and stirred at room temperature. Solvent was evaporated in vacuo, and the residue was taken up in methanol (1 mL), filtered and purified by preparative chromatography. The combined fractions were partitioned between NaHCO3 (sat) and ethylacetate. The organic layer was washed with water and concentrated in vacuo to afford the title compound. HRMS (ESI, pos. ion) m/z calcd for C21H21N3O2: 349.1426, found 349.1693.

Aufarbeitung

  1. customSolvent was evaporated in vacuo
  2. filtrationfiltered
  3. custompurified by preparative chromatography
  4. customThe combined fractions were partitioned between NaHCO3 (sat) and ethylacetate
  5. washThe organic layer was washed with water
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-e787f621e2a44c7894952f4382656ff5
Quelldatensatz
uspto-grants-2010_02
Patentnummer
US07666888B2

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