Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

A highly efficient enantioselective Michael addition of cyclic N-sulfonylimines with nitroalkenes has been developed, utilizing a bifunctional squaramide catalyst. This approach achieves remarkable results, delivering products high yields and outstanding stereoselectivities, reaching up to 97% yield, >20:1 dr, >99% ee. Furthermore, an asymmetric tandem reaction 2-nitroallylic acetates established. innovative methodology involves Michael/intramolecular aza-Michael cascade, leading the formation enantioenriched benzosultam-fused tricyclic compounds excellent stereoselectivities (up dr ee).

Language: Английский