Asymmetric synergy between chiral dienes and diphosphines in cationic Rh(I)-catalyzed intramolecular [4 + 2] cycloaddition.
High enantioselective [4 + 2] cycloaddition can be achieved by cationic Rh complexes bearing not only chiral phosphine but also chiral diene. This is the first example of asymmetric synergy between chiral dienes and diphosphines.
Aikawa
Kohsuke
K
Department of Applied Chemistry, Tokyo Institute of Technology, Tokyo 152-8552, Japan.
Akutagawa
Susumu
S
Mikami
Koichi
K