Oxidation of hydroxylamines to nitrones catalyzed by (salen)Mn(III) complexes.: Enantioselective synthesis of a protected cis-dihydroxypyrroline N-oxide with Jacobsen catalyst

被引:33
作者
Cicchi, S [1 ]
Cardona, F [1 ]
Brandi, A [1 ]
Corsi, M [1 ]
Goti, A [1 ]
机构
[1] Univ Florence, Dipartimento Chim Organ Ugo Schiff, CNR, CSCEA, I-50121 Florence, Italy
关键词
oxidation; nitrones; catalysis; enantioselection;
D O I
10.1016/S0040-4039(99)00098-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Oxidation of N,N-disubstituted hydroxylamines to nitrones catalyzed by the Jacobsen catalyst occurs cleanly in the presence of hydrogen peroxide, sodium hypochlorite or iodosylbenzene as the stoichiometric oxidant. Meso 3,4-cis-isopropylidenedioxy-1-hydroxypyrrolidine gave the corresponding protected 3,4-cis-dihydroxypyrroline N-oxide in an enantioenriched fashion for the first time (up to 36% e.e.). (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1989 / 1992
页数:4
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