C2-Symmetric Bicyclo[3.3.1]nonadiene as a Chiral Ligand for Rhodium-Catalyzed Asymmetric Arylation of N-(4-Nitrobenzenesulfonyl)arylimines
摘要:
Asymmetric synthesis of diarylmethylamines with high enantioselectivity (95-99% ee) was realized by use of a new C-2-symmetric diene ligand. (1R,5R)-2,6-diphenylbicyclo[3.3.1]nona-2,6-diene (Ph-bnd*), for the rhodium-catalyzed asymmetric arylation of N(4-nitrobenzenesulfony)arylimines with arylboroxines.
Electronic and steric tuning of chiral diene ligands for rhodium-catalyzed asymmetric arylation of imines
作者:Kazuhiro Okamoto、Tamio Hayashi、Viresh H. Rawal
DOI:10.1039/b904624k
日期:——
Rhodium-catalyzedasymmetricarylation of imines using electronically and sterically-modified chiral diene ligands gave the corresponding diarylmethylamines in high yield and with high enantioselectivity using just 0.3 mol% of catalyst.
A chiral N-linked C2-symmetric bidentate phosphoramidite (N-Me-BIPAM) was newly developed for the rhodium-catalyzed enantioselective addition of arylboronicacids to N-sulfonylimines. This ligand achieved high enantioselectivities in a range of 84–99% ee in additions of arylboronicacids to N-tosyl- and N-nosylarylaldimines.
Rhodium-Catalyzed Asymmetric Arylation of Imines with Organostannanes. Asymmetric Synthesis of Diarylmethylamines
作者:Tamio Hayashi、Mitsuo Ishigedani
DOI:10.1021/ja9927220
日期:2000.2.1
Highly Enantioselective Synthesis of (Diarylmethyl)amines by Rhodium-Catalyzed Arylation of N-Nosylimines Using a Chiral Bicyclo[3.3.0]diene Ligand
作者:Ming-Hua Xu、Guo-Qiang Lin、Li Wang、Zhi-Qian Wang
DOI:10.1055/s-0030-1258210
日期:2010.10
A highly efficient asymmetric arylation of N-nosylimines with arylboronic acids catalyzed by a rhodium-diene complex is described. A wide range of enantiopure (98-99% ee) N-(diarylmethyl)nosylamides, as well as (3S)-2-(4-nosyl)-3-phenylisoindolin-1-one, were obtained in high yields (83-99%) under very mild conditions. asymmetric catalysis - amines - arylations - rhodium - diarylmethylamines
<i>C</i><sub>2</sub>-Symmetric Bicyclo[3.3.1]nonadiene as a Chiral Ligand for Rhodium-Catalyzed Asymmetric Arylation of <i>N</i>-(4-Nitrobenzenesulfonyl)arylimines
Asymmetric synthesis of diarylmethylamines with high enantioselectivity (95-99% ee) was realized by use of a new C-2-symmetric diene ligand. (1R,5R)-2,6-diphenylbicyclo[3.3.1]nona-2,6-diene (Ph-bnd*), for the rhodium-catalyzed asymmetric arylation of N(4-nitrobenzenesulfony)arylimines with arylboroxines.