Beilstein J. Org. Chem.2019,15, 955–962, doi:10.3762/bjoc.15.92
: asymmetric organocatalysis; axial chirality; biaryls; hydrogen bond; oxo-Diels–Alderreaction; Introduction
The Diels–Alder (DA) reaction is a useful and easy-to-perform method for the synthesis of six-membered rings through the direct formation of C–C bonds between a diene and a dienophile (a substituted