Potassium Carbonate → 6-chloro-2-(2-methylphenyl)-5-[4-(1H-pyrazol-1-yl)benzyl]-2,5-dihydro-3H-pyrazolo[4,3-c]cinnolin-3-one

HRID 449973

Reaktionsgleichung

Reaktionsgleichung von HRID 449973
C(O[C:4]([C:6]1[C:15](=S)[C:14]2[C:9](=[C:10]([Cl:17])[CH:11]=[CH:12][CH:13]=2)[N:8]([CH2:18][C:19]2[CH:24]=[CH:23][C:22]([N:25]3[CH:29]=[CH:28][CH:27]=[N:26]3)=[CH:21][CH:20]=2)[N:7]=1)=[O:5])C.C(=O)([O-])[O-].[K+].[K+].[CH3:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][C:38]=1[NH:43][NH2:44]>COCCOC.O>[Cl:17][C:10]1[C:9]2[N:8]([CH2:18][C:19]3[CH:20]=[CH:21][C:22]([N:25]4[CH:29]=[CH:28][CH:27]=[N:26]4)=[CH:23][CH:24]=3)[N:7]=[C:6]3[C:4](=[O:5])[N:43]([C:38]4[CH:39]=[CH:40][CH:41]=[CH:42][C:37]=4[CH3:36])[N:44]=[C:15]3[C:14]=2[CH:13]=[CH:12][CH:11]=1

Komponenten

6

Edukt 3

HCID 11430Potassium CarbonateHCID 68256o-TolylhydrazineHCID 86659992ethyl-8-chloro-1-[4-(1H-pyrazol-1-yl)benzyl]-4-thioxo-1,4-dihydrocinnoline-3-carboxylate

Produkt 1

HCID 468968076-chloro-2-(2-methylphenyl)-5-[4-(1H-pyrazol-1-yl)benzyl]-2,5-dihydro-3H-pyrazolo[4,3-c]cinnolin-3-one

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 80711,2-DimethoxyethaneLösungsmittel

Reaktionsbedingungen

Temperatur
92 °C

Versuchsvorschrift

Ethyl-8-chloro-1-[4-(1H-pyrazol-1-yl)benzyl]-4-thioxo-1,4-dihydrocinnoline-3-carboxylate (48 mg, 0.113 mmol), potassium carbonate (78 mg, 0.56 mmol, 5 equiv), and 2-methylphenyl hydrazine (23 mg, 0.19 mmol, 1.7 equiv) were combined in 1,2-dimethoxyethane (2 mL) and heated to 92° C. for 2 hours. The mixture was cooled to ambient temperature, diluted with water (20 mL) and extracted with ethyl acetate (3×40 mL). The combined organic extracts were dried with sodium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (100:0 to 94:6; chloroform:methanol), providing the titled compound: 1H-NMR (400 MHz, CDCl3) δ 8.24 (1H, d, J=7.2 Hz), 7.88 (1H, s), 7.71-7.61 (4H, m), 7.47-7.42 (3H, m), 7.37-7.30 (3H, m), 7.29 (1H, s), 6.4 (1H, m), 6.34 (2H, s), 2.36 (3H, s), ppm; high resolution mass spectrometry (ES+) m/z 467.1388 [(M+H)+; calculated for C26H20ClN6O: 467.1382].

Aufarbeitung

  1. temperatureThe mixture was cooled to ambient temperature
  2. extractionextracted with ethyl acetate (3×40 mL)
  3. dry with materialThe combined organic extracts were dried with sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by silica gel chromatography (100:0 to 94:6; chloroform:methanol)

Quellen und Nachweise

ORD-Eintrag
ord-ae446234ec094b73a8e38c4af30b75c1
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08486946B2

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