Synthesis of Enantioenriched 2-Alkyl Piperidine Derivatives through Asymmetric Reduction of Pyridinium Salts

被引:43
|
作者
Qu, Bo [1 ]
Mangunuru, Hari P. R. [1 ]
Wei, Xudong [1 ]
Fandrick, Keith R. [1 ]
Desrosiers, Jean-Nicolas [1 ]
Sieber, Joshua D. [1 ]
Kurouski, Dmitry [1 ]
Haddad, Nizar [1 ]
Samankumara, Lalith P. [1 ]
Lee, Heewon [1 ]
Savoie, Jolaine [1 ]
Ma, Shengli [1 ]
Grinberg, Nelu [1 ]
Sarvestani, Max [1 ]
Yee, Nathan K. [1 ]
Song, Jinhua J. [1 ]
Senanayake, Chris H. [1 ]
机构
[1] Boehringer Ingelheim Pharmaceut Inc, Chem Dev, 90 E Ridge POB 368, Ridgefield, CT 06877 USA
关键词
HIGHLY ENANTIOSELECTIVE HYDROGENATION; NICOTINIC ACETYLCHOLINE-RECEPTORS; IRIDIUM-CATALYZED HYDROGENATION; STEREOSELECTIVE-SYNTHESIS; MECHANISTIC INVESTIGATIONS; EFFICIENT SYNTHESIS; IMINES; CYCLIZATION;
D O I
10.1021/acs.orglett.6b02401
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An Ir-catalyzed enantioselective hydrogenation of 2-alkyl-pyridines has been developed using ligand MeO-BoQPhos. High levels of enantioselectivities up to 93:7 er were obtained. The resulting enantioenriched piperidines can be readily converted into biologically interesting molecules such as the fused tricyclic structures 5, 6, and 7 in 99:1 er, providing a novel, concise synthetic route to this family of chiral piperidine-containing compounds.
引用
收藏
页码:4920 / 4923
页数:4
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