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New Types of o-Carborane-Based Chiral Phosphinooxazoline (Cab-PHOX) Ligand Systems: Synthesis and Characterization of Chiral Cab-PHOX Ligands and Their Application to Asymmetric Hydrogenation
- Lee, Jong-Dae;
- Co, Thanh Thien;
- Kim, Tae-Jeong;
- Kang, Sang Ook
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7초록
o-Carborane-based chiral phosphinooxazoline (Cab-PHOX) ligands were synthesized for the first time and applied to the iridium and rhodium-catalyzed hydrogenation of unfunctionalized and functionalized olefins with an enantioselectivity of up to 98% and 96%, respectively. The modularity of the Cab-PHOX ligands is highlighted by the facile preparation of a variety of sterically and electronically different ligands.
키워드
chiral phosphinooxazoline ligands; o-carborane-based bidentate ligands; asymmetric hydrogenation; unfunctionalized olefins; functionalized olefins; CATALYZED ALLYLIC SUBSTITUTION; ENANTIOSELECTIVE HECK REACTIONS; OXAZOLINE LIGANDS; EFFICIENT SYNTHESIS; PHOSPHORUS LIGANDS; CRYSTAL-STRUCTURES; METAL-COMPLEXES; P,N-LIGANDS; OLEFINS; ALKENES
- 제목
- New Types of o-Carborane-Based Chiral Phosphinooxazoline (Cab-PHOX) Ligand Systems: Synthesis and Characterization of Chiral Cab-PHOX Ligands and Their Application to Asymmetric Hydrogenation
- 저자
- Lee, Jong-Dae; Co, Thanh Thien; Kim, Tae-Jeong; Kang, Sang Ook
- 발행일
- 2009-03-17
- 유형
- Article
- 저널명
- Synlett
- 호
- 5
- 페이지
- 771 ~ 774