Hydrochloric Acid → 6-(3-Chlorobenzyl)-1-(2,6-dimethylphenyl)-1,5-dihydropyrazolo[3,4-d]pyrimidin-4-one

HRID 1434540

Reaktionsgleichung

Reaktionsgleichung von HRID 1434540
[NH2:1][C:2]1[N:6]([C:7]2[C:12]([CH3:13])=[CH:11][CH:10]=[CH:9][C:8]=2[CH3:14])[N:5]=[CH:4][C:3]=1[C:15]([NH2:17])=[O:16].[Cl:18][C:19]1[CH:20]=[C:21]([CH2:25][C:26](OC)=O)[CH:22]=[CH:23][CH:24]=1.[H-].[Na+].Cl>C(O)C>[Cl:18][C:19]1[CH:20]=[C:21]([CH:22]=[CH:23][CH:24]=1)[CH2:25][C:26]1[NH:17][C:15](=[O:16])[C:3]2[CH:4]=[N:5][N:6]([C:7]3[C:12]([CH3:13])=[CH:11][CH:10]=[CH:9][C:8]=3[CH3:14])[C:2]=2[N:1]=1

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 2733544Methyl 2-(3-chlorophenyl)acetateHCID 121505615-amino-1-(2,6-dimethylphenyl)-1H-pyrazole-4-carboxamide

Produkt 1

HCID 1361755836-(3-Chlorobenzyl)-1-(2,6-dimethylphenyl)-1,5-dihydropyrazolo[3,4-d]pyrimidin-4-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

0.1 g (0.43 mmol) of 5-amino-1-(2,6-dimethylphenyl)-1H-pyrazole-4-carboxamide (Example 16A) is dissolved under argon in 6 ml of absolute ethanol and 0.24 g (1.3 mmol) of methyl 3-chlorophenylacetate and 0.17 g (4.34 mmol) of 60% sodium hydride (suspension in mineral oil) are added. The reaction mixture is heated to reflux overnight. Cooling to room temperature is followed by acidification with concentrated hydrochloric acid. The sodium chloride precipitated thereby is filtered off. The filtrate is concentrated in vacuo, and the remaining residue is purified by preparative HPLC (YMC Gel ODS-AQ S 5/15 μm; eluent A: water, eluent B: acetonitrile; gradient: 0 min 30% B, 5 min 30% B, 50 min 95% B). 59 mg (37% of theory) of the product are obtained as a colourless solid.

Aufarbeitung

  1. temperatureThe reaction mixture is heated
  2. temperatureto reflux overnight
  3. customThe sodium chloride precipitated
  4. filtrationthereby is filtered off
  5. concentrationThe filtrate is concentrated in vacuo
  6. customthe remaining residue is purified by preparative HPLC (YMC Gel ODS-AQ S 5/15 μm; eluent A: water, eluent B: acetonitrile; gradient: 0 min 30% B, 5 min 30% B, 50 min 95% B)
  7. custom59 mg (37% of theory) of the product are obtained as a colourless solid

Quellen und Nachweise

ORD-Eintrag
ord-58bfcd1382804bfca8aa5c9f1e4c8c9e
Quelldatensatz
uspto-grants-2009_11
Patentnummer
US07615558B2

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