Ir-Catalyzed Enantioselective Hydrogenation of 2H-1,4-Benzoxazines with a Chiral 1,2,3,4- Tetrahydro-l-naphthylamine Derived Phosphine-aminophosphine Ligand
Ir-Catalyzed Enantioselective Hydrogenation of 2H-1,4-Benzoxazines with a Chiral 1,2,3,4- Tetrahydro-l-naphthylamine Derived Phosphine-aminophosphine Ligand
摘要
Unsymmetrical hybrid chiral phosphine-aminophosphine ligand derived from 1,2,3,4-tetrahydro-l-naphthyl- amine has been found to be highly efficient in the Ir-catalyzed asymmetric hydrogenation of various 3-aryl-2H-1,4-benzoxazines, providing good enantioselectivities （up to 95% ee） and high catalytic activity （S/C up to 5000）.
Unsymmetrical hybrid chiral phosphine-aminophosphine ligand derived from 1,2,3,4-tetrahydro-l-naphthyl- amine has been found to be highly efficient in the Ir-catalyzed asymmetric hydrogenation of various 3-aryl-2H-1,4-benzoxazines, providing good enantioselectivities （up to 95% ee） and high catalytic activity （S/C up to 5000）.
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