Direct Transformation of Esters into Arenes with 1,5-Bifunctional Organomagnesium Reagents
作者:Achim Link、Christian Fischer、Christof Sparr
DOI:10.1002/anie.201505414
日期:2015.10.5
A direct transformation of carboxylic acid esters into arenes with 1,5‐bifunctional organomagnesium reagents is described. This efficient and practical method enables the one‐step defunctionalization of various carboxylic acid esters to prepare benzene, anthracene, tetracene, and pentacene derivatives. A double nucleophilic addition of the 1,5‐organodimagnesium reagent to the ester is followed by an
描述了使用1,5-双功能有机镁试剂将羧酸酯直接转化为芳烃的方法。这种高效实用的方法可以一步一步将各种羧酸酯进行去官能化反应,以制备苯,蒽,并四苯和并五苯衍生物。在酯中双亲核加成1,5-有机二镁试剂后,立即进行1,4-消除反应,导致新芳香环的直接[5 + 1]形成。