title: The MPEG effect: improving asymmetric processes by simple additives.
abstract: Small amounts of simple methoxy poly(ethylene glycol)s (MPEGs) have a beneficial effect on catalyzed asymmetric aryl and alkyl transfer reactions onto aldehydes. The enantiomeric excesses of the products are improved, and this "MPEG effect" allows a reduction of the catalyst loading by a factor of 10.
authors.affiliation: Institut für Organische Chemie der RWTH Aachen, Professor Pirlet Strasse 1, D-52056 Aachen, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Rudolph
authors.forename: Nina
authors.initials: N
authors.lastname: Hermanns
authors.forename: Carsten
authors.initials: C
authors.lastname: Bolm