Complexes of ruthenum, method for their preparation, and their application in olefin metathesis reactions
申请人:Grela Karol Leslaw
公开号:US09074028B2
公开(公告)日:2015-07-07
The present invention provides new ruthenium complexes of Formula (1), which contain a chelate ring created by a halogen atom X. The invention concerns also a method for the preparation of the new ruthenium complexes and their application in metathesis reactions.
A series of modified Hoveyda–Grubbs catalysts incorporating a chelating iodo-benzylidene ligand were prepared and characterized. The presence of electron-withdrawing ring substituents in the para position to the iodide was found to decrease the catalytic activity, revealing that dissociation of the Ru⋯I–Ar bond is not the rate-determining step.
describe a catalytic asymmetric iminium ion cyclization reaction of simple 2-alkenylbenzaldimines using a BINOL-derived chiral N-triflyl phosphoramide. The corresponding 1-aminoindenes and tetracyclic 1-aminoindanes are formed in good yields and high enantioselectivities. Further, the chemical utility of the obtained enantiopure 1-aminoindene is demonstrated for the asymmetric synthesis of (S)-rasagiline
我们描述了使用 BINOL 衍生的手性N-三氟甲基磷酰胺的简单 2-烯基苯甲醛二亚胺的催化不对称亚胺离子环化反应。相应的 1-氨基茚和四环 1-氨基茚以良好的产率和高对映选择性形成。此外,所获得的对映体纯 1-氨基茚的化学效用被证明用于 ( S )-雷沙吉兰的不对称合成。