Benzyl Chloride → 1-benzyl-4-bromo-2-methyl-1H-benzo[d]imidazole

HRID 1429900노트

반응식

HRID 1429900 반응식
[CH2:1](Cl)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Br:9][C:10]1[C:18]2[N:17]=[C:16]([CH3:19])[NH:15][C:14]=2[CH:13]=[CH:12][CH:11]=1.[H-].[Na+]>CN(C=O)C.CO>[CH2:1]([N:15]1[C:14]2[CH:13]=[CH:12][CH:11]=[C:10]([Br:9])[C:18]=2[N:17]=[C:16]1[CH3:19])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

6

반응물 3

HCID 7503Benzyl ChlorideHCID 24758Sodium hydrideHCID 158289794-bromo-2-methyl-1H-1,3-benzodiazole

생성물 1

HCID 671269161-benzyl-4-bromo-2-methyl-1H-benzo[d]imidazole

시약·촉매·용매 2

HCID 887Methanol용매HCID 6228Dimethylformamide용매

실험 절차

Benzyl chloride (1.527 mL) was added to a solution of 4-bromo-2-methyl-1H-benzimidazole (1.40 g) and sodium hydride (0.531 g) in DMF (10 mL) at 0° C. The mixture was stirred at room temperature under a dry atmosphere for 1 h. The reaction mixture was diluted with MeOH and concentrated in vacuo. The residue was purified by column chromatography (NH silica gel, eluted with 5%-50% EtOAc in hexane) to give 1-benzyl-4-bromo-2-methyl-1H-benzo[d]imidazole (1.88 g) as tan oil. The mixture of 1-benzyl-4-bromo-2-methyl-1H-benzo[d]imidazole (496 mg), 3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-1-{[2-(trimethylsilyl)ethoxy]methyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (700 mg), Pd(Ph3P)4 (87 mg), sodium carbonate (476 mg) and THF (18 mL)-water (0.90 mL) was heated at 100° C. for 1 h under microwave irradiation. The mixture was poured into water at room temperature and extracted with EtOAc. The organic layer was separated, washed with brine, dried over MgSO4 and concentrated in vacuo. The residue was purified by column chromatography (silica gel, eluted with 10%-50% EtOAc in hexane) to give 3-[4-(1-benzyl-2-methyl-1H-benzimidazol-4-yl)phenyl]-1-{[2-(trimethylsilyl)ethoxy]methyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (450 mg) as white crystals.

후처리

  1. concentrationconcentrated in vacuo
  2. customThe residue was purified by column chromatography (NH silica gel, eluted with 5%-50% EtOAc in hexane)

출처 및 근거

ORD 기록
ord-6946ac9b175649f2b213b562b0415552
출처 데이터셋
uspto-grants-2015_01
특허 번호
US08940758B2

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