An approach to enantioselective 5-endo halo-lactonization reactions
An approach to enantioselective 5-endo halo-lactonization reactions
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DOI：
10.1002/ejoc.200700041
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发表时间：
2007-07-01
影响因子：
2.8
通讯作者：
Rousseau, Gerard
中科院分区：
文献类型：
--
作者：
Garnier, Jean Marc;Robin, Sylvie;Rousseau, Gerard
Enantioselective lactonization of 4-substituted but-3-enoic acids using iodobis(N-methylephedrine) hexafluoroantimonate in dichloromethane at low temperatures is reported. The presence of bis(N-methylephedrine)silver(I) hexafluoroantimonate, derived from the excess amounts of N-methylephedrine and silver hexafluoroantimonate that were necessary for the generation of the iodo complex in the reaction mixture, is crucial for the success of this reaction. The different parameters of these cyclization reactions have been examined. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).
