Application of Isocyanides as Amide Surrogates in the Synthesis of Diverse Isoindolin-1-one Derivatives by a Palladium-Catalyzed Tandem Carboxamidation/Hydroamidation Reaction
作者:Ramdas S Pathare、Shivani Sharma、Sathish Elagandhula、Vaishali Saini、Devesh M Sawant、Monika Yadav、Ashoke Sharon、Shahnawaz Khan、Ram T Pardasani
DOI:10.1002/ejoc.201600999
日期:2016.11
The rapid synthesis of the isoindolinone skeleton has been accomplished by a palladium-catalyzed one-pot tandem process, which consists of an isocyanide insertion/hydration (carboxamidation) and 5-exo-dig cycloisomerization (hydroamidation) reaction sequence that afforded the products in good to excellent yields. Preliminary mechanistic studies of this sequential C–C/C–O/C–N bond formation process
异吲哚啉酮骨架的快速合成是通过钯催化的一锅串联工艺完成的,该工艺由异氰化物插入/水合(羧酰胺化)和 5-exo-dig 环异构化(加氢酰胺化)反应序列组成,提供了良好的产物。以优异的产量。这种连续的 C-C/C-O/C-N 键形成过程的初步机理研究表明,羧酰胺化步骤是钯依赖性的,而加氢酰胺化步骤仅由碱介导,并由炔烃的亲电性驱动。