scheme31

Scheme 31. Organocatalytic annulation cascade reaction of α, β-unsaturated butenolides 62 and butyrolactone-derived cyclic imino esters 57. This figure is used with permission from the Royal Society of Chemistry[90].
Scheme 31. Organocatalytic annulation cascade reaction of α, β-unsaturated butenolides 62 and butyrolactone-derived cyclic imino esters 57. This figure is used with permission from the Royal Society of Chemistry[90].
All published articles are preserved here permanently:
https://www.portico.org/publishers/oae/