Sodium hydride → HCID 90460857, compound

Participants

Reaction Steps

To a solution of ethyl 4-bromo-1H-imidazole-5-carboxylate (400 mg, 1.83 mmol, 1.00 equiv) in N,N-dimethylformamide (2 mL) was added sodium hydride (100 mg, 4.17 mmol, 1.00 equiv) in portions. The reaction was stirred at room temperature for 20 min then [2-(chloromethoxy)ethyl]trimethylsilane (300 mg, 1.80 mmol, 1.00 equiv) was added. The resulting solution was stirred at room temperature for 5 h and then diluted with 50 mL of ethyl acetate. The mixture was washed with 3×10 mL of brine then the organic layer was dried over anhydrous sodium sulfate and concentrated. The residue was purified on a silica gel column eluted with 0-10% of ethyl acetate in petroleum ether to give 330 mg (52%) of ethyl 4-bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazole-5-carboxylate as a colorless oil. 1H-NMR (300 MHz, CDCl3): δ 7.69 (s, 1H), 5.67 (s, 2H), 4.43-4.36 (m, 2H), 3.58 (t, J=10.8 Hz, 2H), 1.45-1.40 (m, 3H), 0.94 (t, J=10.8 Hz, 2H), 0.05 (s, 9H) ppm.

Provenance & Evidence