Potassium Carbonate → 2-(2,4-Dimethoxy-benzyl)-4-(2-dimethylamino-ethoxy)-isoindole-1,3-dione

HRID 334910ノート

反応式

HRID 334910 の反応式
[CH3:1][O:2][C:3]1[CH:21]=[C:20]([O:22][CH3:23])[CH:19]=[CH:18][C:4]=1[CH2:5][N:6]1[C:14](=[O:15])[C:13]2[C:8](=[CH:9][CH:10]=[CH:11][C:12]=2[OH:16])[C:7]1=[O:17].Cl.[CH3:25][N:26]([CH3:30])[CH2:27][CH2:28]Cl.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:21]=[C:20]([O:22][CH3:23])[CH:19]=[CH:18][C:4]=1[CH2:5][N:6]1[C:14](=[O:15])[C:13]2[C:8](=[CH:9][CH:10]=[CH:11][C:12]=2[O:16][CH2:28][CH2:27][N:26]([CH3:30])[CH3:25])[C:7]1=[O:17]

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 11636816N,N-Dimethylaminoethyl chloride hydrochlorideHCID 592631282-(2,4-Dimethoxy-benzyl)-4-hydroxy-isoindole-1,3-dione

生成物 1

HCID 592631232-(2,4-Dimethoxy-benzyl)-4-(2-dimethylamino-ethoxy)-isoindole-1,3-dione収率 61%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
60 °C

実験手順

A mixture of 2-(2,4-dimethoxy-benzyl)-4-hydroxy-isoindole-1,3-dione (317 mg, 1.01 mmol), 2-dimethylaminoethyl chloride hydrochloride (160 mg, 1.11 mmol) and potassium carbonate (350 mg, 2.5 mmol) in DMF (4 mL) was heated at 60° C. for 18 hours. The mixture was concentrated in vacuo, taken up in ethyl acetate and extracted twice with 1N hydrochloric acid. The aqueous extracts were made basic with solid potassium carbonate and extracted with ethyl acetate (×2). The combined organic extracts were washed with brine, dried (MgSO4) and concentrated to give the title compound (236 mg, 61%) as an off-white solid. 1H NMR (methanol-d4) 7.73 (1H, t), 7.44-7.40 (2H, m), 7.02 (1H, d), 6.51 (1H, d), 6.42 (1H, dd), 4.72 (2H, s), 4.33 (2H, t), 3.80 (3H, s), 3.76 (3H, s), 2.87 (2H, t), 2.40 (6H, s). MS: [M+H]+ 385.

後処理

  1. concentrationThe mixture was concentrated in vacuo
  2. extractionextracted twice with 1N hydrochloric acid
  3. extractionextracted with ethyl acetate (×2)
  4. washThe combined organic extracts were washed with brine
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-04bbfca3423d4e20bc8169026e257277
出典データセット
uspto-grants-2014_11
特許番号
US08883790B2

反応ノート

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