Practical Synthesis of α-Perfluoroalkyl Cyclic Imines and Amines

被引:28
|
作者
Shevchenko, Nikolay E. [2 ]
Balenkova, Elisabeth S. [2 ]
Roeschenthaler, Gerd-Volker [1 ]
Nenajdenko, Valentine G. [2 ]
机构
[1] Univ Bremen, Inst Inorgan & Phys Chem, D-28334 Bremen, Germany
[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
来源
SYNTHESIS-STUTTGART | 2010年 / 01期
关键词
fluorine; nitrogen heterocycles; alpha-polyfluoroalkyl imines; reductions; CONVENIENT SYNTHESIS; PYRROLINES; CHEMISTRY; ESTERS; ACCESS; ACIDS;
D O I
10.1055/s-0029-1217104
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A convenient and simple approach for the preparation of alpha-CF3 and alpha-C2F5 substituted pyrrolines, tetrahydropyridines, tetrahydroazepine is described. Claisen condensation of N-protected cyclic amides with esters of perfluorocarboxylic acids followed by deprotection and decarboxylation in acidic media leads to the desired products. Reduction of these imines permits to obtain 5-, 6-, and 7-membered cyclic amines with alpha-CF3 or alpha-C2F5 group in good to moderate overall yields.
引用
收藏
页码:120 / 126
页数:7
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