Highly Active Chiral Ruthenium-Based Metathesis Catalysts through a Monosubstitution in the N-Heterocyclic Carbene
作者:Sascha Tiede、Anke Berger、David Schlesiger、Daniel Rost、Anja Lühl、Siegfried Blechert
DOI:10.1002/anie.201000940
日期:2010.5.25
Single (substitution) is better: New chiral ruthenium metathesis (pre)catalysts with a monosubstituted carbon atom in the N‐heterocyclic carbene ligand are highly stable in solution, initiate easily, show very high enantioselectivity and excellent E selectivity in asymmetric ring‐opening cross‐metathesis (see scheme).
单(取代)更好:N-杂环卡宾配体中具有单取代碳原子的新型手性钌复分解(预)催化剂在溶液中高度稳定,易于引发,在非对称开环交叉中显示出很高的对映选择性和极好的E选择性复分解(请参阅方案)。