A mechanistic study investigating the substitution pattern depending regioselectivity
of enantioselective BINOL-Ti-catalyzed Diels–Alder reactions of juglone-based dienophiles
with 1-oxygenated dienes is reported. The different influences of residues both on
the diene as well as on the dienophiles are investigated giving a detailed picture
of their role on the regioselectivity.
Key words
catalysis - Diels–Alder reaction - Lewis acids - regioselectivity - enantioselectivity