反应详情

温度

50 °C

Hydroxylamine hydrochloride (121 mg) and sodium bicarbonate (293 mg) was added to a solution of ethyl 3-(5-cyano-1H-indol-2-yl)propanoate (D30) (200 mg) in EtOH (15 mL), in that sequence. The reaction mixture was heated to 50° C. and stirred for 72 hours at that temperature. Another portion of hydroxylamine hydrochloride (60 mg) was added, followed by addition of sodium bicarbonate (150 mg). The resulting suspension was stirred at 50° C. for 24 hours. The inorganics was filtered off. The solid was washed with dichloromethane. The filtrate was concentrated to afford a pale yellow oil. Trituration of the residue provided ethyl 3-{5-[(hydroxyamino)(imino)methyl]-1H-indol-2-yl}propanoate (D31) (220 mg) as a pale yellow solid.

1. stirringThe resulting suspension was stirred at 50° C. for 24 hours
2. filtrationThe inorganics was filtered off
3. washThe solid was washed with dichloromethane
4. concentrationThe filtrate was concentrated
5. customto afford a pale yellow oil