Potassium Carbonate → HCID 22281971、化合物

HRID 1062807ノート

反応式

HRID 1062807 の反応式
[NH2:1][C:2]1[N:6]([CH3:7])[N:5]=[C:4]([OH:8])[C:3]=1[C:9]1[CH:17]=[CH:16][C:12]2[O:13][CH2:14][O:15][C:11]=2[CH:10]=1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:25][CH:26]1[CH2:28][CH2:27]1>CN(C)C=O>[O:13]1[C:12]2[CH:16]=[CH:17][C:9]([C:3]3[C:4]([O:8][CH2:25][CH:26]4[CH2:28][CH2:27]4)=[N:5][N:6]([CH3:7])[C:2]=3[NH2:1])=[CH:10][C:11]=2[O:15][CH2:14]1

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 81503BromomethylcyclopropaneHCID 178481945HCID 178481945、化合物

生成物 1

HCID 22281971HCID 22281971、化合物

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To 5-amino-4-(1,3-benzodioxol-5-yl)-1-methyl-1H-pyrazol-3-ol (500 mg) (Preparation 46) in anhydrous dimethylformamide (21 ml) under an atmosphere of nitrogen at room temperature was added solid potassium carbonate (980 mg) and bromomethylcyclopropane (230 μl). The mixture was stirred overnight then quenched by the addition of water (100 ml) and a saturated aqueous solution of ammonium chloride (50 ml). The solution was extracted with ethyl acetate (3×40 ml). The organic fraction was dried over sodium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography (silica, 30 g) eluted with hexane:ethyl acetate (1:2) to yield the title compound as a colourless oil (365 mg).

後処理

  1. customthen quenched by the addition of water (100 ml)
  2. extractionThe solution was extracted with ethyl acetate (3×40 ml)
  3. dry with materialThe organic fraction was dried over sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by column chromatography (silica, 30 g)
  6. washeluted with hexane:ethyl acetate (1:2)

出典と根拠

ORDレコード
ord-369d599566444ae4a983425f5628d01d
出典データセット
uspto-grants-2005_11
特許番号
US06962923B2

反応ノート

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