A new bipiperidine-based manganese catalyst is introduced, which catalyzes the chemoselective benzylic oxidation of a wide range of diverse functionalized alkyl arenes with H2O2, affording various functionalized aryl ketones, cyclic imines, and bioactive molecules under mild conditions in a short time.
Asymmetric aldol reactions were studied in the presence of heterocyclic bimorpholine- and bipiperidine-type organocatalysts. Bimorpholine derivatives were found to be more reactive and more selective in intramolecular, as well as intermolecular, reactions. (c) 2008 Elsevier Ltd. All rights reserved.
SATO, MITSUNOBU;SATO, YOICHI;YANO, SHIGENOBU;YOSHIKAWA, SADAO, J. CHEM. SOC. DALTON TRANS., 1985, N 5, 895-898