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Asymmetric Counteranion‐Directed Transition‐Metal Catalysis: Enantioselective Epoxidation of Alkenes with Manganese(III) Salen Phosphate Complexes
Author(s) -
Liao Saihu,
List Benjamin
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200905332
Subject(s) - enantioselective synthesis , cationic polymerization , catalysis , manganese , chemistry , phosphate , transition metal , combinatorial chemistry , polymer chemistry , metal , organic chemistry
Paired up : A highly active and enantioselective ion‐pair epoxidation catalyst, consisting of an achiral Mn III –salen complex and a chiral phosphate counteranion, mediates the epoxidization of a wide range of alkenes with high yields and enantioselectivities (see scheme). The unique role of the counteranion is to stabilize an enantiomorphic conformation of the cationic Mn catalyst.