Sodium Carbonate → HCID 86613377, Verbindung

HRID 2422881Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2422881
Br[C:2]1[CH:7]=[CH:6][C:5]([C@H:8]([N:10]2[C:18](=[O:19])[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11]2=[O:20])[CH3:9])=[CH:4][CH:3]=1.[Cl:21][C:22]1[C:27](B(O)O)=[CH:26][C:25]([F:31])=[CH:24][N:23]=1.C(=O)([O-])[O-].[Na+].[Na+]>COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:21][C:22]1[C:27]([C:2]2[CH:7]=[CH:6][C:5]([C@H:8]([N:10]3[C:18](=[O:19])[C:17]4[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=4)[C:11]3=[O:20])[CH3:9])=[CH:4][CH:3]=2)=[CH:26][C:25]([F:31])=[CH:24][N:23]=1

Komponenten

6

Edukt 3

HCID 10340Sodium CarbonateHCID 249017742-Chloro-5-fluoropyridine-3-boronic acidHCID 67243883(R)-2-[1-(4-bromo-phenyl)-ethyl]-isoindole-1,3-dione

Produkt 1

HCID 86613377HCID 86613377, VerbindungAusbeute 44,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 80711,2-DimethoxyethaneLösungsmittel

Reaktionsbedingungen

Temperatur
150 °C

Versuchsvorschrift

To a solution of (R)-2-[1-(4-bromo-phenyl)-ethyl]-isoindole-1,3-dione (1.19 g, 3.6 mmol) (Example 26) in 1,2-dimethoxyethane (3 ml) was added 2-chloro-5-fluoropyridine-3-boronic acid (0.95 g, 5.4 mmol), tetrakis(triphenylphosphine)palladium (0) (0.21 g, 0.2 mmol) and 2M aqueous sodium carbonate (3.2 ml, 6.4 mmol). The reaction mixture was heated in a microwave oven at 150° C. for 10 min and the solvent evaporated. The residue was partitioned between ethyl acetate and water. The organic phase washed with brine, dried over anhydrous magnesium sulfate and the solvent evaporated. The residue was purified over silica gel eluting with heptane/ethyl acetate to give (R)-2-{1-[4-(2-chloro-5-fluoro-pyridin-3-yl)-phenyl]-ethyl}-isoindole-1,3-dione (0.62 g, 1.6 mmol, 44%) as a clear glass. To a solution of (R)-2-[1-(4-bromo-phenyl)-ethyl]-isoindole-1,3-dione (0.16 g, 0:4 mmol) in methanol (4 ml) was added hydrazine hydrate (0.43 g, 8.6 mmol). The reaction mixture was stirred at room temperature for 18 h and then concentrated under reduced pressure. Dichloromethane was added and the resultant white precipitate filtered off. The solvent was evaporated to give 1-[4-(2-chloro-5-fluoro-pyridin-3-yl)-phenyl]-ethylamine (0.11 g, 0.4 mmol, 100%) as a yellow gum. To a solution of (R)-1-[4-(2-chloro-5-fluoro-pyridin-3-yl)-phenyl]-ethylamine (26 mg, 0.1 mmol) in dichloromethane (1 ml) was added triethylamine (31.6 mg, 0.31 mmol) followed by 3,4-difluorobenzenesulfonyl chloride (28.7 mg, 0.14 mmol). The reaction mixture was agitated for 64 h at room temperature and the solvent evaporated. The crude product was taken up in dimethyl sulfoxide (1 ml) and purified by preparatory LCMS. The solvent was evaporated under reduced pressure to give the title compound (6.7 mg, 0.04 mmol, 38%). 1H NMR (400 MHz, DMSO-d6): δ 8.48 (m, 2H), 7.78 (dd, 1H), 7.45-7.60 (m, 3H), 7.27-7.34 (m, 4H), 4.50 (q, 1H), 1.33 (d, 3H) ppm; MS (ESI) m/z: 427 [M+H]+.

Aufarbeitung

  1. customthe solvent evaporated
  2. customThe residue was partitioned between ethyl acetate and water
  3. washThe organic phase washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent evaporated
  6. customThe residue was purified over silica gel eluting with heptane/ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-bc6a07858c294659ba7b885df1e4d699
Quelldatensatz
uspto-grants-2011_06
Patentnummer
US07960365B2

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