Stereoselective synthesis of trifluoromethyl-substituted 1,2-diamines by aza-Michael reaction with trans-3,3,3-trifluoro-1-nitropropene

被引:22
作者
Turconi, Joel
Lebeau, Luc
Paris, Jean-Marc
Mioskowski, Charles
机构
[1] Univ Louis Pasteur Strasbourg 1, Fac Pharm, Lab Synthese Bioorgan Associe CNRS, F-67401 Illkirch Graffenstaden, France
[2] Rhone Poulenc Rech, Ctr Rech & Technol Lyon, F-69192 St Fons, France
关键词
perfluoroalkyl nitroalkene; diastereoselective aza-Michael addition; 3,3,3-trifluoro-1-nitropropene; 4-phenyl-2-oxazolidinone;
D O I
10.1016/j.tet.2006.06.013
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Aza-Michael addition of optically pure 4-phenyl-2-oxazolidinone to 3,3,3-trifluoro-1-nitropropene proceeds smoothly at low temperature with a high yield. Diastereoselectivity of the addition depends on the base used and lithiated species proved to be highly efficient affording 92% de. Optically pure 1,2-diamino-3,3,3-trifluoropropane is prepared in 58% yield from the aza-Michael addition product through a three-step procedure. (c) 2006 Elsevier Ltd. All rights reserved.
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页码:8109 / 8114
页数:6
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