反应详情

1,1-Dimethylethyl 6-cyano-5-methyl-3,4-dihydro-2(1H)-isoquinolinecarboxylate (Preparation 16; 404 mg; 1.48 mmol) was stirred overnight at 80° C. with hydroxylamine hydrochloride (619 mg; 8.90 mmol) and sodium bicarbonate (748 mg; 8.9 mmol) in ethanol (10 ml). Further sodium bicarbonate (400 mg) and hydroxylamine hydrochloride (300 mg) were added, and heating continued for ca. 8 h. The mixture was cooled to room temperature, and the resulting solid removed, washed with ethanol, and dried under high vacuum to give the title compound as a white solid (431 mg).

1. temperatureheating
2. customthe resulting solid removed
3. washwashed with ethanol
4. customdried under high vacuum