Potassium Iodide → 1-[5-{4-[bis(4-fluorophenyl)methyl]-1-piperazinyl}pentyl]-1,3-dihydro-2H-benzimidazol-2-one dihydrochloride

HRID 354985ノート

反応式

HRID 354985 の反応式
[Cl:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]1[C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=2[N:9](C(C)=C)[C:8]1=[O:19].[F:20][C:21]1[CH:26]=[CH:25][C:24]([CH:27]([C:34]2[CH:39]=[CH:38][C:37]([F:40])=[CH:36][CH:35]=2)[N:28]2[CH2:33][CH2:32][NH:31][CH2:30][CH2:29]2)=[CH:23][CH:22]=1.C(=O)([O-])[O-].[Na+].[Na+].[I-].[K+]>O.CC(C)CC(=O)C>[ClH:1].[ClH:1].[F:40][C:37]1[CH:36]=[CH:35][C:34]([CH:27]([C:24]2[CH:25]=[CH:26][C:21]([F:20])=[CH:22][CH:23]=2)[N:28]2[CH2:29][CH2:30][N:31]([CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][N:7]3[C:11]4[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=4[NH:9][C:8]3=[O:19])[CH2:32][CH2:33]2)=[CH:39][CH:38]=1

参加物

7

反応物 4

HCID 4875Potassium IodideHCID 10340Sodium CarbonateHCID 1529321-(Bis(4-fluorophenyl)methyl)piperazineHCID 205063661-(5-chloropentyl)-1,3-dihydro-3-(1-methylethenyl)-2H-benzimidazol-2-one

生成物 1

HCID 867374911-[5-{4-[bis(4-fluorophenyl)methyl]-1-piperazinyl}pentyl]-1,3-dihydro-2H-benzimidazol-2-one dihydrochloride

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 7909Methyl Isobutyl Ketone溶媒

実験手順

A mixture of 6.95 parts of 1-(5-chloropentyl)-1,3-dihydro-3-(1-methylethenyl)-2H-benzimidazol-2-one, 5.7 parts of 1-[bis(4-fluorophenyl)methyl]piperazine, 5.3 parts of sodium carbonate, 0.1 parts of potassium iodide and 160 parts of 4-methyl-2-pentanone is stirred and refluxed overnight. The reaction mixture is cooled to room temperature, water is added and the layers are separated. The organic phase is dried, filtered and evaporated. The residue is stirred and refluxed for 30 minutes with a solution of 12 parts of a concentrated hydrochloric acid solution in 40 parts of ethanol. The solvent is evaporated and the free base is liberated in the conventional manner with a diluted ammonium hydroxide solution. The product is extracted with trichloromethane. The extract is dried, filtered and evaporated. The residue is purified by column-chromatography over silica gel using a mixture of trichloromethane and methanol (90:10 by volume) as eluent. The pure fractions are collected and the eluent is evaporated. The residue is converted into the hydrochloride salt in ethanol and 2-propanol. The salt is filtered off and dried, yielding 1-[5-{4-[bis(4-fluorophenyl)methyl]-1-piperazinyl}pentyl]-1,3-dihydro-2H-benzimidazol-2-one dihydrochloride.hydrate; mp. 203.7° C.

後処理

  1. temperaturerefluxed overnight
  2. customthe layers are separated
  3. customThe organic phase is dried
  4. filtrationfiltered
  5. customevaporated
  6. stirringThe residue is stirred
  7. temperaturerefluxed for 30 minutes with a solution of 12 parts of a concentrated hydrochloric acid solution in 40 parts of ethanol
  8. customThe solvent is evaporated
  9. extractionThe product is extracted with trichloromethane
  10. customThe extract is dried
  11. filtrationfiltered
  12. customevaporated
  13. customThe residue is purified by column-chromatography over silica gel using
  14. additiona mixture of trichloromethane and methanol (90:10 by volume) as eluent
  15. customThe pure fractions are collected
  16. customthe eluent is evaporated
  17. filtrationThe salt is filtered off
  18. customdried

出典と根拠

ORDレコード
ord-c2e48614e0dd422188dff02d46be6da1
出典データセット
uspto-grants-1983_03
特許番号
US04377578

反応ノート

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