Potassium Carbonate → 1-[4-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-piperidinyl]propoxy]-3-methoxyphenyl]-phenylmethanone

HRID 233841Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 233841
[F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:14][CH2:13][NH:12][CH2:11][CH2:10]3)=[N:7][O:8][C:4]=2[CH:3]=1.C([O-])([O-])=O.[K+].[K+].Br[CH2:24][CH2:25][CH2:26][O:27][C:28]1[CH:33]=[CH:32][C:31]([C:34]2([CH:40]=[O:41])[CH:39]=[CH:38][CH:37]=[CH:36][CH2:35]2)=[CH:30][C:29]=1[O:42][CH3:43]>C(#N)C>[F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:10][CH2:11][N:12]([CH2:24][CH2:25][CH2:26][O:27][C:28]4[CH:33]=[CH:32][C:31]([C:34]5([CH:40]=[O:41])[CH:35]=[CH:36][CH:37]=[CH:38][CH2:39]5)=[CH:30][C:29]=4[O:42][CH3:43])[CH2:13][CH2:14]3)=[N:7][O:8][C:4]=2[CH:3]=1

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 8494213-(4-Piperidyl)-6-fluoro-1,2-benzisoxazoleHCID 867482531-[4-(3-Bromopropoxy)-3-methoxyphenyl] phenylmethanone

Produkt 1

HCID 867482521-[4-[3-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-piperidinyl]propoxy]-3-methoxyphenyl]-phenylmethanoneAusbeute 87 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

A mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole (2.2 g, 10 mmol), K2CO3 (2.3 g) and 1-[4-(3-bromopropoxy)-3-methoxyphenyl]phenylmethanone (3.47 g, 10 mmol) in acetonitrile (100 ml) was heated at reflux for 3 hours. At the end of reaction, the acetonitrile was concentrated and the mixture was extracted into dichloromethane (200 ml). The insolubles were filtered off and the solvent was evaporated to an oil. Purification was carried out by flash chromatography over a silica gel column (SiO2, 50 g; eluted with dichloromethane, 600 ml; 1% methanol:dichloromethane, 600 ml; 2% methanol: 98% dichloromethane, 600 ml). The fractions containing the pure product were combined and concentrated to give 4.24 g (87%) of an off-white solid. Recrystallization from ethanol (75 ml) gave 3.9 g of 1-[4-[3-[4-(6-fluoro-1,2-benziosoxazol-3-yl)-1-piperidinyl]-propoxy]-3methoxyphenyl]phenylmethanone as off-white crystals, m.p.=128°-130° C.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux for 3 hours
  3. customAt the end of reaction
  4. concentrationthe acetonitrile was concentrated
  5. extractionthe mixture was extracted into dichloromethane (200 ml)
  6. filtrationThe insolubles were filtered off
  7. customthe solvent was evaporated to an oil
  8. customPurification
  9. washwas carried out by flash chromatography over a silica gel column (SiO2, 50 g; eluted with dichloromethane, 600 ml; 1% methanol:dichloromethane, 600 ml; 2% methanol: 98% dichloromethane, 600 ml)
  10. additionThe fractions containing the pure product
  11. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-1f09311faeff421a9c6917d57b8a72ec
Quelldatensatz
uspto-grants-1997_01
Patentnummer
US05593995

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