描述了通过串联β-片段化-分子内环化反应合成苯并咪唑融合的亚氨基糖。使用苯并咪唑环作为内部亲核试剂以及使用苯基碘代邻苯二甲酸酯(PhI(Phth))(一种无金属,低毒性的高价碘新试剂),是该合成策略最显着的新颖之处。通过这种方法,我们已经证明了由PhI(Phth)/ I 2系统促进的异头烷氧基自由基断裂对于制备新化合物的用途,这对于医学和合成化学家均具有潜在的意义。
A Cooperative Strategy for the Highly Selective Intermolecular Oxycarbonylation Reaction of Alkenes using a Palladium Catalyst
作者:Ming Li、Feng Yu、Xiaoxu Qi、Pinhong Chen、Guosheng Liu
DOI:10.1002/anie.201607248
日期:2016.10.24
terminal and internal alkenes has been designed. The electrophilic reagent, hypervalent iodine, plays a key role in this process by activating the alkene C=C bond for nucleophilic addition of the palladiumcatalyst. This process generates an iodonium‐containing palladium species which undergoes CO insertion. The new approach, intermolecular oxycarbonylaton reactions of alkenes, has been achieved and