反应详情

The method of Part B of Example 25 was followed using O-(tert-butyl)hydroxylamine hydrochloride (2.0 g, 16 mmol) in lieu of O-methylhydroxylamine hydrochloride to treat N-(4-chloroquinolin-3-yl)acetamide (3.2 g, 14.5 mmol) with the modification that the reaction was heated at reflux for three hours. Following the work-up procedure, the resulting blue oil was purified by column chromatography on silica gel (eluting with 5% methanol in dichloromethane containing 5 mL of aqueous ammonium hydroxide per liter of eluent) to provide 1.92 g of 1-tert-butoxy-2-methyl-1H-imidazo[4,5-c]quinoline as a blue oil.

1. temperaturewas heated
2. temperatureat reflux for three hours
3. customthe resulting blue oil was purified by column chromatography on silica gel (eluting with 5% methanol in dichloromethane containing 5 mL of aqueous ammonium hydroxide per liter of eluent)