Planar-chiral arene ruthenium complexes: synthesis, separation of enantiomers, and application for catalytic C–H activation
作者:Mikhail A. Boym、Roman A. Pototskiy、Evgeniya S. Podyacheva、Denis A. Chusov、Yulia V. Nelyubina、Dmitry S. Perekalin
DOI:10.1039/d4cc00181h
日期:2024.4.18
Heating tert-butyl-tetraline with [(p-cymene)RuCl2]2 produces the racemic complex [(arene)RuCl2]2, which can be separated into enantiomers by chromatography of its diastereomeric adducts with chiral phosphine ligand. The resolved chiral complex catalyzes C–H activation of N-methoxy-benzamides and their annulation with N-vinyl-pivaloyl amide giving dihydroisoquinolones in 50–80% yields and with 40–80%
Chiral Cyclopentadienyl Ligands as Stereocontrolling Element in Asymmetric C–H Functionalization
作者:Baihua Ye、Nicolai Cramer
DOI:10.1126/science.1226938
日期:2012.10.26
derivative to the Cpligand to enable docking in a chiral streptavidin protein cavity, which in turn was engineered to further optimize catalytic performance. Ye and Cramer (p. 504) appended chiral substituents on the Cp framework to bias the rest of the coordination environment around the metalcenter. A ligand rarely applied to asymmetric catalysis has been chirally modified to furnish a highly selective