Cesium carbonate → 8-(1-Ethyl-propyl)-3-(3,5-dimethyl-benzo[b]thiophen-2-yl)-2,6-dimethyl-imidazo[1,2-b]pyridazine

HRID 226040

反応式

HRID 226040 の反応式
[CH2:1]([CH:3]([C:6]1[C:7]2[N:8]([C:13](I)=[C:14]([CH3:16])[N:15]=2)[N:9]=[C:10]([CH3:12])[CH:11]=1)[CH2:4][CH3:5])[CH3:2].[CH3:18][C:19]1[C:20]2[CH:27]=[CH:26][CH:25]=[CH:24][C:21]=2[S:22][CH:23]=1.[C:28]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>C(OCC)C.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].CN(C=O)C>[CH2:1]([CH:3]([C:6]1[C:7]2[N:8]([C:13]([C:23]3[S:22][C:21]4[CH:24]=[CH:25][C:26]([CH3:28])=[CH:27][C:20]=4[C:19]=3[CH3:18])=[C:14]([CH3:16])[N:15]=2)[N:9]=[C:10]([CH3:12])[CH:11]=1)[CH2:4][CH3:5])[CH3:2]

参加物

8

反応物 4

HCID 10796Cesium carbonateHCID 11776TriphenylphosphineHCID 738173-Methylbenzo[b]thiopheneHCID 577526818-(1-Ethyl-propyl)-3-iodo-2,6-dimethyl-imidazo[1,2-b]pyridazine

生成物 1

HCID 577526068-(1-Ethyl-propyl)-3-(3,5-dimethyl-benzo[b]thiophen-2-yl)-2,6-dimethyl-imidazo[1,2-b]pyridazine収率 85%

試薬・触媒・溶媒 3

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 3283Diethyl Ether溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
130 °C

実験手順

A mixture of 8-(1-ethyl-propyl)-3-iodo-2,6-dimethyl-imidazo[1,2-b]pyridazine (0.145 mmol), 3-methyl-benzo[b]thiophene (7.25 mmol), Pd2 dba3 (0.0072 mmol), triphenylphosphine (0.029 mmol), and cesium carbonate (0.29 mmol) in previously degassed DMF (0.5 ml) is added to a pressure tube with a stirring bar. The mixture is degassed for 30 min. After heating for 16 h at 130° C., reaction mixture is cooled, diluted with diethylether and washed with saturated aqueous ammonium chloride solution. The organic layer is dried over anhydrous magnesium sulfate, filtered, and the solvent is removed in vacuo. The residue is purified by silica gel column chromatography using mixtures of hexane-ethyl acetate as eluent to give the title compound (85%).

後処理

  1. additionis added to a pressure tube with a stirring bar
  2. customThe mixture is degassed for 30 min
  3. customreaction mixture
  4. temperatureis cooled
  5. washwashed with saturated aqueous ammonium chloride solution
  6. dry with materialThe organic layer is dried over anhydrous magnesium sulfate
  7. filtrationfiltered
  8. customthe solvent is removed in vacuo
  9. customThe residue is purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-ae5b6238cd8747faba4bf0158a24b4f7
出典データセット
uspto-grants-2009_07
特許番号
US07557103B2

関連ノート

読み込み中…