Regioselective Reduction of 1-Aryl-3-arylamino-pyrrolidine-2,5-diones by Sodium Borohydride: A Convenient Route to 3-Arylamino-4-hydroxybutanamides
摘要:
The hitherto unknown 3-arylamino-4-hydroxy-butanamides are prepared in high yields by regio-selective reduction of 1-aryl-3-arylaminopyrrolidine-2,5-diones by sodium borohydride in neutral media. Intramolecular hydrogen bonding is proposed to be an important factor in controlling the regioselectivity.