Asymmetric synthesis of ferrocenylazido alcohols and their derivatization to novel chiral ferrocenyl-thiazoline ligands with C2-symmetry

被引:44
作者
Tárraga, A [1 ]
Molina, P [1 ]
Curiel, D [1 ]
Bautista, D [1 ]
机构
[1] Univ Murcia, Dept Quim Organ, Fac Quim, E-30071 Murcia, Spain
关键词
D O I
10.1016/S0957-4166(02)00441-X
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The synthesis of previously unreported chiral ferrocenyl-thiazoline ligands is described. (R)-2-Azido-1-ferrocenylethanol 3 and (R,R)-1,1'-bis(2-azido-1-hydroxyethyl)ferrocene 10. available by enantioselective borane reduction of alpha-azidoacetyl ferrocene 1 and 1,1'-bis(2-azidoacetyl)ferrocene 2, respectively. were converted into the corresponding ferrocenyl thiazolines by a three-step sequence invoking catalytic hydrogenation, acylation and cyclization promoted by Lawesson's reagent. New chiral ferrocene-thiazolines with C-2-symmetry were obtained either from (R)-2-azido-1-ferrocenylethanol 3 and diacyl chlorides or from (R,R)-1,1'-bis(2-azido-1-hydroxyethyl)ferrocene 10 and monoacyl chlorides, (C) 2002 Elsevier Science Ltd. All rights reserved.
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收藏
页码:1621 / 1628
页数:8
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