Diastereoselective Ce(OiPr)(3)-Catalyzed Pinacol Couplings of Aldehydes.
Aliphatic aldehydes as well as aromatic aldehydes can be converted by means of cerium-catalyzed pinacol coupling [Eq. (1)]. The coupling reaction products can be isolated with good to very good diastereoselectivities in favor of rac isomers (rac:meso>88:12). R=alkyl, aryl.
Groth
U
Fakultät für Chemie Universität Konstanz, Universitätsstrasse 10 78464 Konstanz (Germany).
Jeske
M