反应详情

Under a nitrogen atmosphere, a solution of tert-butyl {4-[3-amino-7-(benzyloxy)quinolin-4-ylamino]butyl}carbamate (28.62 g, 65.5 mmol) in dichloromethane (1 L) was cooled to ˜0° C.; triethylamine (10.0 mL, 72.1 mmol) was added. Methoxypropionyl chloride (8.57 mL, 78.6 mmol) was added dropwise, and the reaction was stirred at ambient temperature for two hours. The volatiles were removed under reduced pressure, and the residue was dissolved in ethanol (840 mL). Triethylamine (33 mL) was added, and the reaction was heated at reflux overnight and allowed to cool to ambient temperature. The volatiles were removed under reduced pressure to provide 30.77 g of tert-butyl {4-[7-benzyloxy-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-1-yl]butyl}carbamate as a brown oil, which was used without purification.

1. customThe volatiles were removed under reduced pressure
2. dissolutionthe residue was dissolved in ethanol (840 mL)
3. additionTriethylamine (33 mL) was added
4. temperaturethe reaction was heated
5. temperatureat reflux overnight
6. temperatureto cool to ambient temperature
7. customThe volatiles were removed under reduced pressure