[EN] HIGHLY Z-SELECTIVE AND ENANTIOSELECTIVE RING OPENING/CROSS METATHESIS<br/>[FR] MÉTATHÈSE PAR OUVERTURE DE CYCLE/MÉTATHÈSE CROISÉE HAUTEMENT SÉLECTIVE ET ÉNANTIOSÉLECTIVE POUR Z
申请人:CALIFORNIA INST OF TECHN
公开号:WO2014186631A1
公开(公告)日:2014-11-20
This invention relates generally to enantiomerically enriched C-H activated ruthenium olefin metathesis catalyst compounds which are stereogenic at ruthenium, to the preparation of such compounds, and the use of such catalysts in the metathesis of olefins and olefin compounds, more particularly, in the use of such catalysts in enantio- and Z-selective olefin metathesis reactions. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and industrial and fine chemicals chemistry.
A Recyclable Chiral Ru Catalyst for Enantioselective Olefin Metathesis. Efficient Catalytic Asymmetric Ring-Opening/Cross Metathesis in Air
作者:Joshua J. Van Veldhuizen、Steven B. Garber、Jason S. Kingsbury、Amir H. Hoveyda
DOI:10.1021/ja020259c
日期:2002.5.1
a new chiral bidentate imidazolinylidene ligand and a derived chiral Ru-based carbene are disclosed. The Ru complex is stereogenic at the metal center; it can be prepared in >98% diastereoselectivity and purified by silica gel chromatography with undistilled solvents. The air-stable Ru complex efficiently catalyzes ring-closing and ring-opening metathesis and is recyclable. The chiralcomplex is highly
Highly <i>Z</i>-Selective and Enantioselective Ring-Opening/Cross-Metathesis Catalyzed by a Resolved Stereogenic-at-Ru Complex
作者:John Hartung、Robert H. Grubbs
DOI:10.1021/ja4046422
日期:2013.7.17
The synthesis of a ruthenium complex that catalyzes Z-selective (up to 98% Z) asymmetricring-opening/cross-metathesis with high enantioselectivity (up to 95% ee) is reported. The synthesis of the catalyst features the resolution of a chelating N-heterocyclic carbene complex by ligand substitution with a chiral carboxylate.
报道了一种钌配合物的合成,该配合物催化 Z 选择性(高达 98% Z)不对称开环/交叉复分解,具有高对映选择性(高达 95% ee)。该催化剂的合成特征在于通过手性羧酸盐的配体取代来拆分螯合 N-杂环卡宾配合物。