Methyl Isobutyl Ketone → 1-{3-[4-(2,3-dihydro-2-oxo-1H-benzimidazol-1-yl)-1-piperidinyl]propyl}-1,3-dihydro-5-methyl-3-(1-methylethenyl)-2H-benzimidazol-2-one

HRID 46903

반응식

HRID 46903 반응식
Cl[CH2:2][CH2:3][CH2:4][N:5]1[C:9]2[CH:10]=[CH:11][C:12]([CH3:14])=[CH:13][C:8]=2[N:7]([C:15]([CH3:17])=[CH2:16])[C:6]1=[O:18].[NH:19]1[CH2:24][CH2:23][CH:22]([N:25]2[C:29]3[CH:30]=[CH:31][CH:32]=[CH:33][C:28]=3[NH:27][C:26]2=[O:34])[CH2:21][CH2:20]1.C(=O)([O-])[O-].[Na+].[Na+].CC(C)CC(=O)C>O>[O:34]=[C:26]1[N:25]([CH:22]2[CH2:21][CH2:20][N:19]([CH2:2][CH2:3][CH2:4][N:5]3[C:9]4[CH:10]=[CH:11][C:12]([CH3:14])=[CH:13][C:8]=4[N:7]([C:15]([CH3:17])=[CH2:16])[C:6]3=[O:18])[CH2:24][CH2:23]2)[C:29]2[CH:30]=[CH:31][CH:32]=[CH:33][C:28]=2[NH:27]1

참가 물질

6

반응물 4

HCID 7909Methyl Isobutyl KetoneHCID 10340Sodium CarbonateHCID 886381,3-Dihydro-1-(4-piperidinyl)-2H-benzimidazol-2-oneHCID 131056221-(3-chloropropyl)-1,3-dihydro-5-methyl-3-(1-methylethenyl)-2H-benzimidazol-2-one

생성물 1

HCID 203855441-{3-[4-(2,3-dihydro-2-oxo-1H-benzimidazol-1-yl)-1-piperidinyl]propyl}-1,3-dihydro-5-methyl-3-(1-methylethenyl)-2H-benzimidazol-2-one수율 67%

시약·촉매·용매 1

HCID 962Water용매2회

실험 절차

A mixture of 5.3 parts of 1-(3-chloropropyl)-1,3-dihydro-5-methyl-3-(1-methylethenyl)-2H-benzimidazol-2-one, 4.3 parts of 1,3-dihydro-1-(4-piperidinyl)-2H-benzimidazol-2-one, 6.4 parts of sodium carbonate and 200 parts of 4-methyl-2-pentanone is stirred and refluxed overnight with water-separator. After cooling, water is added and the layers are separated. The 4-methyl-2-pentanone-phase is dried, filtered and evaporated. The oily 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, yielding 6 parts (67%) of 1-{3-[4-(2,3-dihydro-2-oxo-1H-benzimidazol-1-yl)-1-piperidinyl]propyl}-1,3-dihydro-5-methyl-3-(1-methylethenyl)-2H-benzimidazol-2-one as an oily residue.

후처리

  1. temperatureAfter cooling
  2. customthe layers are separated
  3. dry with materialThe 4-methyl-2-pentanone-phase is dried
  4. filtrationfiltered
  5. customevaporated
  6. customThe oily residue is purified by column-chromatography over silica gel using
  7. additiona mixture of trichloromethane and methanol (90:10 by volume) as eluent
  8. customThe pure fractions are collected
  9. customthe eluent is evaporated

출처 및 근거

ORD 기록
ord-4c6c7c68ccbb49558b0fa64500c9b111
출처 데이터셋
uspto-grants-1979_11
특허 번호
US04175129

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