Triethylamine → 5-(4-bromo-2-chlorophenyl)-7-(cyclopropylsulfonyl)-4-fluoro-5H-imidazo[4',5':4,5]benzo[1, 2-d]oxazol-6(7H)-one

HRID 928983Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 928983
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:19]3[C:11](=[CH:12][C:13]4[O:17][CH:16]=[N:15][C:14]=4[C:18]=3[F:20])[NH:10][C:9]2=[O:21])=[C:4]([Cl:22])[CH:3]=1.C(N(CC)CC)C.[CH:30]1([S:33](Cl)(=[O:35])=[O:34])[CH2:32][CH2:31]1>C(Cl)Cl.CN(C1C=CN=CC=1)C>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:19]3[C:11](=[CH:12][C:13]4[O:17][CH:16]=[N:15][C:14]=4[C:18]=3[F:20])[N:10]([S:33]([CH:30]3[CH2:32][CH2:31]3)(=[O:35])=[O:34])[C:9]2=[O:21])=[C:4]([Cl:22])[CH:3]=1

Komponenten

6

Edukt 3

HCID 8471TriethylamineHCID 2760919Cyclopropanesulfonyl chlorideHCID 897053695-(4-bromo-2-chlorophenyl)-4-fluoro-5H-imidazo[4',5':4,5]benzo[1,2-d]oxazol-6(7H)-one

Produkt 1

HCID 897053485-(4-bromo-2-chlorophenyl)-7-(cyclopropylsulfonyl)-4-fluoro-5H-imidazo[4',5':4,5]benzo[1, 2-d]oxazol-6(7H)-oneAusbeute 86,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 5-(4-bromo-2-chlorophenyl)-4-fluoro-5H-imidazo[4′,5′:4,5]benzo[1,2-d]oxazol-6(7H)-one (100 mg, 0.26 mmol) in CH2Cl2 (10 mL) was added triethylamine (80 mg, 0.78 mmol) at 0° C. followed by cyclopropanesulfonyl chloride (55 mg, 0.39 mmol) and DMAP (10 mg). The mixture was stirred at room temperature for 1 h and washed with saturated NaHCO3 (aq.). The aqueous layer was extracted with CH2Cl2 (15 mL×2). The combined organic phase was washed with water (15 mL) and brine (20 mL) successively, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography on silica gel (petroleum ether/ethyl acetate, 5:1, v/v) to give the corresponding product (110 mg, 86.5% yield). 1H NMR (400 MHz, CDCl3): δ 8.09 (s, 1H), 7.99 (s, 1H), 7.71-7.69 (m, 2H), 7.32 (m, 1H), 3.35 (m, 1H), 1.69 (m, 2H), 0.88 (m, 2H).

Aufarbeitung

  1. washwashed with saturated NaHCO3 (aq.)
  2. extractionThe aqueous layer was extracted with CH2Cl2 (15 mL×2)
  3. washThe combined organic phase was washed with water (15 mL) and brine (20 mL) successively
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography on silica gel (petroleum ether/ethyl acetate, 5:1

Quellen und Nachweise

ORD-Eintrag
ord-67e562707b1748a090d86c179cc9370a
Quelldatensatz
uspto-grants-2016_03
Patentnummer
US09290468B2

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