Sequential Difunctionalization of 2-Iodobiphenyls by Exploiting the Reactivities of a Palladacycle and an Acyclic Arylpalladium Species
作者:Dushen Chen、Guangfa Shi、Hang Jiang、Yu Zhang、Yanghui Zhang
DOI:10.1021/acs.orglett.6b00753
日期:2016.5.6
A novel sequential difunctionalization reaction of 2-iodobiphenyl has been developed by exploiting the distinct reactivities of a palladacycle and an acyclic arylpalladium species. In this tandem reaction, an in situ formed dibenzopalladacyclopentadiene reacts selectively with an alkyl halide, after which the thus formed acyclic arylpalladium species selectively undergoes a Heck reaction with an alkene
通过利用palladacycle和无环芳基钯物种的独特反应性,开发了2-碘联苯的新型顺序双官能化反应。在该串联反应中,原位形成的二苯并钯铝环戊二烯与卤代烷选择性地反应,此后,由此形成的无环芳基钯物质选择性地与烯烃进行Heck反应。这项工作证明了过渡金属络合物的配位模式与其反应性之间的密切关系,可以揭示其他过渡金属催化的反应机理,并为开发其他合成实现的有机转化提供机会。