Ethanol → 1-(4-oxo-3,4,6,7,8,9-hexahydro-benzo[g]quinazolin-2-yl)-1H-pyrazole-4-carboxylic acid

HRID 1428857Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1428857
C([O:3][C:4]([C:6]1[CH:7]=[N:8][N:9]([C:11]2[N:20](COCCOC)[C:19](=[O:27])[C:18]3[C:13](=[CH:14][C:15]4[CH2:31][CH2:30][CH2:29][CH2:28][C:16]=4[CH:17]=3)[N:12]=2)[CH:10]=1)=[O:5])C.C(O)C>CCOCC>[O:27]=[C:19]1[C:18]2[C:13](=[CH:14][C:15]3[CH2:31][CH2:30][CH2:29][CH2:28][C:16]=3[CH:17]=2)[N:12]=[C:11]([N:9]2[CH:10]=[C:6]([C:4]([OH:5])=[O:3])[CH:7]=[N:8]2)[NH:20]1

Komponenten

4

Edukt 2

HCID 702EthanolHCID 684848471-[3-(2-methoxy-ethoxymethyl)-4-oxo-3,4,6,7,8,9-hexahydro-benzo[g]quinazolin-2-yl]-1H-pyrazole-4-carboxylic acid ethyl ester

Produkt 1

HCID 1360276431-(4-oxo-3,4,6,7,8,9-hexahydro-benzo[g]quinazolin-2-yl)-1H-pyrazole-4-carboxylic acidAusbeute 48,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Versuchsvorschrift

Preparation of 1-(4-oxo-3,4,6,7,8,9-hexahydro-benzo[g]quinazolin-2-yl)-1H-pyrazole-4-carboxylic acid ethyl ester. HCl (4M in dioxane, 2.1 mL, 8.3 mmol) was added to a solution of 1-[3-(2-methoxy-ethoxymethyl)-4-oxo-3,4,6,7,8,9-hexahydro-benzo[g]quinazolin-2-yl]-1H-pyrazole-4-carboxylic acid ethyl ester (0.254 g, 0.596 mmol) and ethanol (2.0 mL). The reaction mixture was stirred at room temperature for 4 h, at which point ether (2 mL) was added and the precipitate was collected. The precipitate was triturated three times with ethanol, once with ethanol/THF (1:1), and once with DMSO. The filter cake was rinsed with ethanol and dried to yield the titled compound (89.4 mg, 44% yield). MS (ESI/Cl): mass calcd. for C18H18N4O3, 338.1; m/z found, 339.1 [M+H]+. 1H NMR (600 MHz, DMSO-d6): 12.66 (s, 1H), 8.98 (s, 1H), 8.30 (s, 1H), 7.84 (s, 1H), 7.40 (s, 1H), 4.30 (q, J=7.1 Hz, 2H), 2.95-2.83 (m, 4H), 1.82-1.74 (m, 4H), 1.32 (t, J=7.1 Hz, 3H).

Aufarbeitung

  1. additionwas added
  2. customthe precipitate was collected
  3. customThe precipitate was triturated three times with ethanol
  4. washThe filter cake was rinsed with ethanol
  5. customdried

Quellen und Nachweise

ORD-Eintrag
ord-69bcafbbd2344a63b4b765e6007ebfa1
Quelldatensatz
uspto-grants-2015_01
Patentnummer
US08937078B2

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