Cesium carbonate → 2-(3-isopropyl-2-oxo-2,3-dihydro-benzoimidazol-1-ylmethyl)-1-(3-methyl-butyl)-1H-benzoimidazole-5-carbonitrile

HRID 896299ノート

反応式

HRID 896299 の反応式
[CH:1]([N:4]1[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[NH:6][C:5]1=[O:13])([CH3:3])[CH3:2].C([O-])([O-])=O.[Cs+].[Cs+].Cl[CH2:21][C:22]1[N:26]([CH2:27][CH2:28][CH:29]([CH3:31])[CH3:30])[C:25]2[CH:32]=[CH:33][C:34]([C:36]#[N:37])=[CH:35][C:24]=2[N:23]=1>CN(C=O)C.CCOC(C)=O>[CH:1]([N:4]1[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[N:6]([CH2:21][C:22]2[N:26]([CH2:27][CH2:28][CH:29]([CH3:31])[CH3:30])[C:25]3[CH:32]=[CH:33][C:34]([C:36]#[N:37])=[CH:35][C:24]=3[N:23]=2)[C:5]1=[O:13])([CH3:3])[CH3:2]

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 16535801-(Propan-2-yl)-1,3-dihydro-2H-benzimidazol-2-oneHCID 223493092-(Chloromethyl)-1-isopentyl-benzimidazole-5-carbonitrile

生成物 1

HCID 223493242-(3-isopropyl-2-oxo-2,3-dihydro-benzoimidazol-1-ylmethyl)-1-(3-methyl-butyl)-1H-benzoimidazole-5-carbonitrile収率 95%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A suspension of 1-isopropyl-1,3-dihydro-benzoimidazol-2-one (0.79 g, 4.5 mmol) and Cs2CO3 (4.40 g, 13.5 mmol) in DMF (50 mL) was stirred for 30 minutes then 2-chloromethyl-1-(3-methyl-butyl)-1H-benzoimidazole-5-carbonitrile (1.34 g, 4.5 mmol) was added and the mixture stirred for 5 h at ambient temperature. The reaction mixture was diluted with EtOAc (50 mL) and filtered. The filtrate was evaporated to dryness and the residue taken up in EtOAc (100 mL), washed with water and brine. The organic layer was dried over MgSO4 and evaporated. The residue was purified by flash chromatography (gradient, hexanes:EtOAc 3:1 to 1:1) to give 1.71 g (95%) of 2-(3-isopropyl-2-oxo-2,3-dihydro-benzoimidazol-1-ylmethyl)-1-(3-methyl-butyl)-1H-benzoimidazole-5-carbonitrile as a white solid.

後処理

  1. stirringthe mixture stirred for 5 h at ambient temperature
  2. filtrationfiltered
  3. customThe filtrate was evaporated to dryness
  4. washwashed with water and brine
  5. dry with materialThe organic layer was dried over MgSO4
  6. customevaporated
  7. customThe residue was purified by flash chromatography (gradient, hexanes:EtOAc 3:1 to 1:1)

出典と根拠

ORDレコード
ord-2b292b75ad924b399e6d7d4241c56b9a
出典データセット
uspto-grants-2005_07
特許番号
US06919331B2

反応ノート

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