Potassium Iodide → 5-bromo-1-{1-[4,4-bis(4-fluorophenyl)butyl]-4-piperidinyl}-1,3-dihydro-2H-benzimidazol-2-one

HRID 1729813Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1729813
Cl[CH2:2][CH2:3][CH2:4][CH:5]([C:13]1[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=1)[C:6]1[CH:11]=[CH:10][C:9]([F:12])=[CH:8][CH:7]=1.[Br:20][C:21]1[CH:36]=[CH:35][C:24]2[N:25]([CH:29]3[CH2:34][CH2:33][NH:32][CH2:31][CH2:30]3)[C:26](=[O:28])[NH:27][C:23]=2[CH:22]=1.C(=O)([O-])[O-].[Na+].[Na+].[I-].[K+]>O.CC(C)CC(=O)C>[Br:20][C:21]1[CH:36]=[CH:35][C:24]2[N:25]([CH:29]3[CH2:30][CH2:31][N:32]([CH2:2][CH2:3][CH2:4][CH:5]([C:13]4[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=4)[C:6]4[CH:11]=[CH:10][C:9]([F:12])=[CH:8][CH:7]=4)[CH2:33][CH2:34]3)[C:26](=[O:28])[NH:27][C:23]=2[CH:22]=1

Komponenten

7

Edukt 4

HCID 4875Potassium IodideHCID 10340Sodium CarbonateHCID 768201,1'-(4-Chlorobutylidene)bis(4-fluorobenzene)HCID 137920985-bromo-1-(piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one

Produkt 1

HCID 215002755-bromo-1-{1-[4,4-bis(4-fluorophenyl)butyl]-4-piperidinyl}-1,3-dihydro-2H-benzimidazol-2-one

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 7909Methyl Isobutyl KetoneLösungsmittel

Versuchsvorschrift

A mixture of 7 parts of 1-chloro-4,4-bis(4-fluorophenyl)-butane, 5.9 parts of 5-bromo-1,3-dihydro-1-(4-piperidinyl)-2H-benzimidazol-2-one, 6.4 parts of sodium carbonate, 0.2 parts of potassium iodide and 200 parts of 4-methyl-2-pentanone is stirred and refluxed overnight. The reaction mixture is cooled, water is added and the layers are separated. The organic phase is dried, filtered and evaporated. The residue is crystallized twice: first from a mixture of 2-propanol and 2,2'-oxybispropane and then from ethanol. The product is filtered off and dried, yielding 5-bromo-1-{1-[4,4-bis(4-fluorophenyl)butyl]-4-piperidinyl}-1,3-dihydro-2H-benzimidazol-2-one; mp. 182° C.

Aufarbeitung

  1. temperaturerefluxed overnight
  2. temperatureThe reaction mixture is cooled
  3. customthe layers are separated
  4. customThe organic phase is dried
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue is crystallized twice
  8. additionfirst from a mixture of 2-propanol and 2,2'-oxybispropane
  9. filtrationThe product is filtered off
  10. customdried

Quellen und Nachweise

ORD-Eintrag
ord-77346db747d14d18be83336021fca3ea
Quelldatensatz
uspto-grants-1976_11
Patentnummer
US03989707

Notizen zur Reaktion

Wird geladen…