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Hydrogen Bromide → HCID 131732301, Verbindung

HRID 2272350
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2272350
N[C:2]1[CH:11]=[CH:10][C:9]([N:12]([C:17]2[C:36]([CH:37]3[CH2:39][CH2:38]3)=[CH:35][C:20]3[C:21]([C:31](=[O:34])[NH:32][CH3:33])=[C:22]([C:24]4[CH:29]=[CH:28][C:27]([F:30])=[CH:26][CH:25]=4)[O:23][C:19]=3[CH:18]=2)[S:13]([CH3:16])(=[O:15])=[O:14])=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].[BrH:40].N([O-])=O.[Na+]>C(#N)C.[Cu]Br>[Br:40][C:2]1[CH:11]=[CH:10][C:9]([N:12]([C:17]2[C:36]([CH:37]3[CH2:39][CH2:38]3)=[CH:35][C:20]3[C:21]([C:31](=[O:34])[NH:32][CH3:33])=[C:22]([C:24]4[CH:29]=[CH:28][C:27]([F:30])=[CH:26][CH:25]=4)[O:23][C:19]=3[CH:18]=2)[S:13]([CH3:16])(=[O:15])=[O:14])=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 260Hydrogen BromideHCID 23668193Sodium NitriteHCID 122643079HCID 122643079, Verbindung

Produkt 1

HCID 131732301HCID 131732301, VerbindungAusbeute 55,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 24593copper(I) bromideKatalysator
HCID 6342
Acetonitrile
Lösungsmittel

Versuchsvorschrift

A suspension of methyl 2-amino-5-(N-(5-cyclopropyl-2-(4-fluorophenyl)-3-(methylcarbamoyl)benzofuran-6-yl)methylsulfonamido)benzoate (1.6 g, 2.70 mmol) in acetonitrile (30 mL) and hydrogen bromide (25 mL, 2.70 mmol) was treated with aqueous sodium nitrite (0.205 g, 2.97 mmol) at 0° C. and the mixture was stirred for 30 min, copper(I) bromide (0.464 g, 3.24 mmol) was added in portions at the same temperature. It was allowed to warm up to room temperature and then heated to 55° C. overnight. The mixture was cooled down to room temperature and partitioned between EtOAc and water. The organic phase was washed with brine, dried over Na2SO4. Concentrated under reduced pressure, the residue was purified by flashing chromatography on silica gel eluted with 0-50% EtOAc in hexane to give the product (0.92 g, 55%) as a white foam. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.49 (q, J=4.23 Hz, 1H) 8.14 (s, 1H) 7.97 (dd, J=8.78, 5.46 Hz, 2H) 7.80 (d, J=2.93 Hz, 1H) 7.75 (d, J=8.78 Hz, 1H) 7.50 (dd, J=8.88, 2.83 Hz, 1H) 7.41 (t, J=8.88 Hz, 2H) 7.22 (s, 1H) 3.84 (s, 3H) 3.44 (s, 3H) 2.84 (d, J=4.68 Hz, 3H) 2.05-2.15 (m, 1H) 0.92-1.05 (br. s, 1H) 0.87 (br. s., 2H) 0.40 (br. s., 1H). LCMS (m/z, ES+)=617 (M+H+).

Aufarbeitung

  1. temperatureheated to 55° C. overnight
  2. temperatureThe mixture was cooled down to room temperature
  3. custompartitioned between EtOAc and water
  4. washThe organic phase was washed with brine
  5. dry with materialdried over Na2SO4
  6. concentrationConcentrated under reduced pressure
  7. customthe residue was purified
  8. washeluted with 0-50% EtOAc in hexane

Quellen und Nachweise

ORD-Eintrag
ord-ba94e0c631624f17aaacff4e9d6839d1
Quelldatensatz
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09119868B2

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