Sodium Bicarbonate → HCID 17984895, Verbindung

HRID 1968682Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1968682
[NH2:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][C:5](Br)=[CH:4][C:3]=1[C:12]([CH:14]1[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]1)=[O:13].B1([C:26]2[CH:31]=[CH:30][CH:29]=[N:28][CH:27]=2)OCCCO1.C([O-])(O)=O.[Na+]>COCCOC.CCOC(C)=O>[NH2:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][C:5]([C:26]2[CH:27]=[N:28][CH:29]=[CH:30][CH:31]=2)=[CH:4][C:3]=1[C:12]([CH:14]1[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]1)=[O:13]

Komponenten

6

Edukt 3

HCID 516892Sodium BicarbonateHCID 41980053-(1,3,2-Dioxaborinan-2-yl)pyridineHCID 17984899(2-Amino-5-bromo-3-nitro-phenyl)-cyclohexyl-methanone

Produkt 1

HCID 17984895HCID 17984895, VerbindungAusbeute 89 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 80711,2-DimethoxyethaneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

To a solution of (2-amino-5-bromo-3-nitro-phenyl)-cyclohexyl-methanone (600 mg, 1.83 mmol) in DME (25 mL) was added, successively, pyridine-3-boronic acid 1,3-propanediol cyclic ester (388 mg, 2.38 mmol), (tetrakistriphenylphosphine) palladium(0) (212 mg, 0.18 mmol), and 1N NaHCO3 (3.7 mL, 3.7 mmol). The resulting mixture was stirred at 90° C. for 90 minutes then cooled to room temperature. The reaction mixture was diluted with EtOAc (100 mL), washed with water (50 mL), brine (50 mL), dried (MgSO4), filtered and the filtrate concentrated in vacuo. The resulting residue was purified by flash chromatography (SiO2, hexanes to 3:1 hexanes:EtOAc) to afford 527 mg (89%) of the title compound as a pale orange solid: 1H NMR (CDCl3, 500 MHz) δ 8.92 (d, 1H), 8.69 (d, 1H), 8.66 (d, 1H), 8.31 (d, 1H), 8.20 (d, 1H), 7.71 (dd, 1H), 3.36 (m, 1H), 1.88 (m, 3H), 1.77 (m, 1H), 1.40-1.61 (m, 3H), 1.24-1.32 (m, 2H), 0.89 (m, 1H).

Aufarbeitung

  1. temperaturethen cooled to room temperature
  2. washwashed with water (50 mL), brine (50 mL)
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. concentrationthe filtrate concentrated in vacuo
  6. customThe resulting residue was purified by flash chromatography (SiO2, hexanes to 3:1 hexanes:EtOAc)

Quellen und Nachweise

ORD-Eintrag
ord-84a8863183a0495999311564722d8e43
Quelldatensatz
uspto-grants-2013_04
Patentnummer
US08426426B2

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