作者:Jean Marc Garnier、Sylvie Robin、Gérard Rousseau
DOI:10.1002/ejoc.200700041
日期:2007.7
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
据报道,在低温下,在二氯甲烷中使用碘双(N-甲基麻黄碱)六氟锑酸盐对 4-取代的丁-3-烯酸进行对映选择性内酯化。双(N-甲基麻黄碱)银(I)六氟锑酸盐的存在,源自过量的 N-甲基麻黄碱和六氟锑酸银,这是反应混合物中生成碘络合物所必需的,对于该反应的成功至关重要. 已经检查了这些环化反应的不同参数。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)