Ethanol → HCID 178426240, Verbindung

HRID 416809

Reaktionsgleichung

Reaktionsgleichung von HRID 416809
[Br:1][C:2]1[C:3]([N:12]2[CH2:17][CH2:16][N:15]([CH2:18][C:19]3[CH:23]=[C:22]([CH3:24])[O:21][N:20]=3)[CH2:14][CH2:13]2)=[C:4]([N+:9]([O-])=O)[C:5]([NH2:8])=[N:6][CH:7]=1.CCO.[N:28]1([CH2:33][C:34]2[CH:41]=[CH:40][C:37]([CH:38]=O)=[CH:36][CH:35]=2)[CH:32]=[CH:31][CH:30]=[N:29]1.[O-]S(S([O-])=O)=O.[Na+].[Na+]>C(OCC)C>[Br:1][C:2]1[C:3]([N:12]2[CH2:17][CH2:16][N:15]([CH2:18][C:19]3[CH:23]=[C:22]([CH3:24])[O:21][N:20]=3)[CH2:14][CH2:13]2)=[C:4]2[N:9]=[C:38]([C:37]3[CH:36]=[CH:35][C:34]([CH2:33][N:28]4[CH:32]=[CH:31][CH:30]=[N:29]4)=[CH:41][CH:40]=3)[NH:8][C:5]2=[N:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 702EthanolHCID 24489Sodium DithioniteHCID 185258764-(1H-Pyrazol-1-ylmethyl)benzaldehydeHCID 468687835-Bromo-4-[4-(5-methyl-isoxazol-3-ylmethyl)-piperazin-1-yl]-3-nitro-pyridin-2-ylamine

Produkt 1

HCID 178426240HCID 178426240, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To a mixture of 5-bromo-4-[4-(5-methyl-isoxazol-3-ylmethyl)-piperazin-1-yl]-3-nitro-pyridin-2-ylamine (0.040 g, 0.10 mmol) and EtOH (3.5 ml) was added 4-pyrazol-1-ylmethyl-benzaldehyde (0.024 g, 0.13 mmol) followed by a freshly prepared aqueous solution of Na2S2O4 (1M; 0.40 ml, 0.40 mmol). The reaction mixture was stirred at 80° C. for 20 h, then allowed to cool to room temperature and concentrated in vacuo. The resulting residue was absorbed on silica, and the free-running powder was placed on a 10 g isolute silica column. Elution with a gradient of methanol (0 to 3%) in ethyl acetate/dichloromethane (v:v; 1:1) afforded a solid. The title compound was obtained as a white solid after trituration with diethyl ether (0.020 g, 38%). 1H-NMR (500 MHz, DMSO-d6) 2.40 (s, 3H, isoxazole 5-CH3), 2.63 (br s, 4H, piperazine N(CH2)2), 3.60 (s, 2H, NCH2 isoxazole), 3.66 (br s, 4H, piperazine N(CH2)2), 5.42 (s, 2H, C6H4CH2N), 6.24 (s, 1H, isoxazole 4-H), 6.30 (t, J=2.0 Hz, 1H, pyrazole 4-H), 7.35 (d, J=8.3 Hz, 2H) and 8.14 (d, J=8.2 Hz, 2H) (3,5-C6H4 and 2,6-C6H4), 7.49 (d, J=1.4 Hz, pyrazole-H), 7.86 (d, J=2.0 Hz, 1H, pyrazole-H), 8.24 (s, 1H, imidazo[4,5-b]pyridine 5-H), 13.50 (br s, 1H, imidazo[4,5-b]pyridine N—H);

Aufarbeitung

  1. temperatureto cool to room temperature
  2. concentrationconcentrated in vacuo
  3. customThe resulting residue was absorbed on silica
  4. washElution with a gradient of methanol (0 to 3%) in ethyl acetate/dichloromethane (v:v; 1:1)
  5. customafforded a solid

Quellen und Nachweise

ORD-Eintrag
ord-7e1503aa49f54c76b9fd880ad7567b14
Quelldatensatz
uspto-grants-2012_01
Patentnummer
US08088761B2

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