共 14 条
Multiple Absolute Stereocontrol in Cascade Lactone Formation via Dynamic Kinetic Resolution Driven by the Asymmetric Transfer Hydrogenation of Keto Acids with Oxo-Tethered Ruthenium Catalysts
被引:42
|作者:
Touge, Taichiro
[1
]
Sakaguchi, Kazuhiko
[1
]
Tamaki, Nao
[1
]
Nara, Hideki
[1
]
Yokozawa, Tohru
[1
]
Matsumura, Kazuhiko
[1
]
Kayaki, Yoshihito
[2
]
机构:
[1] Takasago Int Corp, Corp Res & Dev Div, 1-4-11 Nishi Yawata, Hiratsuka, Kanagawa 2540073, Japan
[2] Tokyo Inst Technol, Dept Chem Sci & Engn, Sch Mat & Chem Technol, Meguro Ku, O Okayama 2-12-1-E4-1, Tokyo 1528552, Japan
关键词:
LIGAND BIFUNCTIONAL CATALYSIS;
CHARACTER IMPACT ODORANTS;
AROMATIC KETONES;
REDUCTION;
ALCOHOLS;
INTERMEDIATE;
MECHANISM;
ESTERS;
ROUTE;
D O I:
10.1021/jacs.9b07297
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A straightforward asymmetric construction of chiral fused gamma- and delta-lactones containing multiple contiguous stereocenters was successfully developed by either (1) the dynamic kinetic resolution-asymmetric transfer hydrogenation (DKR-ATH) reaction using oxo-tethered Ru(II) complexes followed by syn-selective lactonization or (2) the tandem DKR-ATH/lactonization in combination with asymmetric hydrogenation catalyzed by Ru-chiral diphosphine complexes. The expedient protocol is applicable to the enantioselective synthesis of natural wine lactone and a biologically active benzo-fused lactone with an unprecedented level of diastereo- and enantioselectivity.
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页码:16354 / 16361
页数:8
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