Potassium Carbonate → N,N-dimethyl-4-[3-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]propoxy]-3-methoxybenzamide

HRID 1601527Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1601527
[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.[CH3:17][N:18]([CH3:34])[C:19](=[O:33])[C:20]1[CH:25]=[CH:24][C:23]([O:26][CH2:27][CH2:28][CH2:29]Br)=[C:22]([O:31][CH3:32])[CH:21]=1.C([O-])([O-])=O.[K+].[K+]>C(#N)C>[CH3:34][N:18]([CH3:17])[C:19](=[O:33])[C:20]1[CH:25]=[CH:24][C:23]([O:26][CH2:27][CH2:28][CH2:29][N:12]2[CH2:11][CH2:10][CH:9]([C:6]3[C:5]4[CH:15]=[CH:16][C:2]([F:1])=[CH:3][C:4]=4[O:8][N:7]=3)[CH2:14][CH2:13]2)=[C:22]([O:31][CH3:32])[CH:21]=1

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 8494213-(4-Piperidyl)-6-fluoro-1,2-benzisoxazoleHCID 10358359N,N-dimethyl4 bromopropoxy-3-methoxybenzamide

Produkt 1

HCID 10049666N,N-dimethyl-4-[3-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]propoxy]-3-methoxybenzamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

A stirred mixture of 6-fluoro-3(4-piperidinyl)-1,2-benzisoxazole (3.9 g, 17.7 mmol), N,N-dimethyl-4-bromopropoxy-3-methoxybenzamide (5.54 g, 17.5 mmol) and K2CO3 (3 g) in acetonitrile (250 ml) was heated at reflux for one hour. At the end of the reaction, the insolubles were filtered and washed with dichloromethane. The solvent was removed on a rotary evaporator. The residue was purified by flash chromatography over a silica gel column. The product thus obtained as an oil weighed 7 g. Crystallization from hot ethanol (45 ml) afforded analytically pure N,N-dimethyl-4-[3-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]propoxy]-3-methoxybenzamide, 3.95 g, 50%, as light yellow crystals, m.p.=126-127° C.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux for one hour
  3. customAt the end of the reaction
  4. filtrationthe insolubles were filtered
  5. washwashed with dichloromethane
  6. customThe solvent was removed on a rotary evaporator
  7. customThe residue was purified by flash chromatography over a silica gel column
  8. customThe product thus obtained as an oil
  9. customCrystallization from hot ethanol (45 ml)

Quellen und Nachweise

ORD-Eintrag
ord-4e4119f1ae9b442b9adc1ea9815d26a8
Quelldatensatz
uspto-grants-1999_11
Patentnummer
US05977140

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