2,2-Diethoxyethylamine → 2,2-Dimethoxy-n-[(1-methyl-1h-benzimidazol-2-yl)methyl]ethanamine

HRID 643081

반응식

HRID 643081 반응식
[CH3:1][N:2]1[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[N:4]=[C:3]1[CH:11]=O.[CH2:13]([O:15][CH:16]([O:19][CH2:20]C)[CH2:17][NH2:18])C.[BH3-]C#N.[Na+]>CO.C(O)(=O)C>[CH3:13][O:15][CH:16]([O:19][CH3:20])[CH2:17][NH:18][CH2:11][C:3]1[N:2]([CH3:1])[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[N:4]=1

참가 물질

6

반응물 3

HCID 695242,2-DiethoxyethylamineHCID 7620841-methyl-1H-1,3-benzodiazole-2-carbaldehydeHCID 5003444Sodium cyanoborohydride

생성물 1

HCID 552185252,2-Dimethoxy-n-[(1-methyl-1h-benzimidazol-2-yl)methyl]ethanamine수율 77.1%

시약·촉매·용매 2

HCID 176Acetic Acid용매HCID 887Methanol용매

실험 절차

A solution of 1-methyl-2-formylbenzimidazole (1 g) in methanol (27 mL) and acetic acid (0.54 mL) was treated with aminoacetaldehyde diethylacetal (0.9 g, 1 equivalent) and NaCNBH3 (0.85 g, 2 equivalents) at 25° C., stirred for 1 hour. The mixture was partitioned between water and ethyl acetate. The organic layer was separated, washed sequentially with saturated NaHCO3 and brine, and concentrated. The residue was purified by eluting with 8% methanol/dichloromethane to give 1.2 g (64%) of the title compound.

후처리

  1. customThe mixture was partitioned between water and ethyl acetate
  2. customThe organic layer was separated
  3. washwashed sequentially with saturated NaHCO3 and brine
  4. concentrationconcentrated
  5. customThe residue was purified
  6. washby eluting with 8% methanol/dichloromethane

출처 및 근거

ORD 기록
ord-ad9d204e608a4e9bbacd289dd9b366e6
출처 데이터셋
uspto-grants-2010_04
특허 번호
US07696226B2

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