ISSN:
1434-193X
Keywords:
Biphasic catalysis
;
Epoxidations
;
Fluorinated compounds
;
Manganese
;
Salen ligands
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Chiral (salen)manganese complexes, which are selectively soluble in perfluorocarbons, were synthesized and tested as epoxidation catalysts in fluorous-organic two-phase systems. The immiscibility of the perfluorocarbons with regular organic solvents allowed a quick and effective separation of the catalyst from the products. These unprecedented perfluoroalkylated salen complexes were found to be efficient and chemoselective catalysts in the presence of several oxygen donors, but enantioselectivities were generally poor. An interesting exception to this behaviour was observed in the asymmetric epoxidation of indene that provides indene oxide with 70-92% enantiomeric excess.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
