Expedient Access to 2,3-Dihydropyridines from Unsaturated Oximes by Rh(III)-Catalyzed C-H Activation

被引:102
作者
Romanov-Michailidis, Fedor [1 ]
Sedillo, Kassandra F. [1 ]
Neely, Jamie M. [1 ]
Rovis, Tomislav [1 ]
机构
[1] Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA
基金
瑞士国家科学基金会;
关键词
BOND FORMATION; ASTERISK-RH; ALKYNES; DIHYDROPYRIDINES; DERIVATIVES; BENZAMIDES; CHEMISTRY; ALKENES; ESTERS;
D O I
10.1021/jacs.5b04946
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
alpha,beta-Unsaturated - oxime pivalates are proposed to undergo reversible C(sp(2))-H insertion with cationic Rh (III) complexes to furnish five-membered metallacycles. In the presence of 1,1-disubstituted olefins, these species participate in irreversible migratory insertion to give, after reductive elimination, 2,3-dihydropyridine products in good yields. Catalytic hydrogenation can then be used to. convert these molecules into piperidines, which are important structural components of numerous pharmaceuticals.
引用
收藏
页码:8892 / 8895
页数:4
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