Catalytic Enantioselective Synthesis of 3-Piperidines from Arylboronic Acids and Pyridine.
Catalytic Enantioselective Synthesis of 3-Piperidines from Arylboronic Acids and Pyridine.
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DOI:
10.1021/jacs.3c05044
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发表时间:
2023-07-05
影响因子:
15
通讯作者:
Fletcher, Stephen P.
中科院分区:
文献类型:
--
作者:
Mishra, Sourabh;Karabiyikoglu, Sedef;Fletcher, Stephen P.
Piperidines are frequently found in natural products and are of importance to the pharmaceutical industry. A generally useful asymmetric route to enantiomerically enriched 3-substituted piperidines remains elusive. Here we report a cross-coupling approach to enantioenriched 3-piperidines from pyridine- and sp2-hybridized boronic acids. The key step involves a Rh-catalyzed asymmetric reductive Heck reaction of aryl, heteroaryl, or vinyl boronic acids and phenyl pyridine-1(2H)-carboxylate to provide 3-substituted tetrahydropyridines in high yield and excellent enantioselectivity with a wide functional group tolerance. A three-step process involving i) partial reduction of pyridine, ii) Rh-catalyzed asymmetric carbometalation, and then iii) another reduction provides access to a wide variety of enantioenriched 3-piperidines, including clinically used materials such as Preclamol and Niraparib.
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