Amination of chiral β-silylated silyl ketene acetals by (ethoxycarbonyl)nitrene
摘要:
The reaction of beta-silylated silyl ketene acetals with (ethoxycarbonylt)nitrene, generated by photolysis of N3CO2Et, produces beta-silylated N-(ethoxycarbonyl)-alpha-amino esters. The prevailing attack of the electrophile was always anti to the beta-silyl group in the substrates containing variously substituted chiral beta-carbon atoms. (C) 1997 Elsevier Science Ltd.