Water → 2,3-Dihydro-1,4-benzodioxine-6-carboxamide

HRID 1622581ノート

反応式

HRID 1622581 の反応式
[O:1]1[CH2:6][CH2:5][O:4][C:3]2[CH:7]=[C:8]([C:11]([OH:13])=O)[CH:9]=[CH:10][C:2]1=2.C1C=CC2N(O)N=[N:20]C=2C=1.N.CCN=C=NCCCN(C)C.Cl.O>CN(C=O)C>[O:1]1[CH2:6][CH2:5][O:4][C:3]2[CH:7]=[C:8]([C:11]([NH2:20])=[O:13])[CH:9]=[CH:10][C:2]1=2

参加物

6

反応物 4

HCID 962WaterHCID 1131751H-Benzotriazole, 1-hydroxy-, ammonium salt (1:1)HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27588331,4-Benzodioxane-6-carboxylic Acid

生成物 1

HCID 6592792,3-Dihydro-1,4-benzodioxine-6-carboxamide収率 31.2%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a solution of 2,3-dihydrobenzo[b][1,4]dioxine-6-carboxylic acid (3.54 g) in DMF (80 mL) were added HOBt-NH3 (4.48 g) and EDCI HCl (5.65 g) at room temperature. The reaction mixture was stirred at room temperature for 3 days, water was added, and the mixture was extracted with ethyl acetate. The extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure and the residue was washed with hexane to give the title compound (1.10 g).

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. washthe residue was washed with hexane

出典と根拠

ORDレコード
ord-5cd6b88ea70f4f628df99e50c4f4cf2d
出典データセット
uspto-grants-2014_07
特許番号
US08778934B2

反応ノート

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