Efficient access to (1H)-isoindolin-1-one-3-carboxylic acid derivatives by orthopalladation and carbonylation of methyl arylglycinate substrates
摘要:
The orthopalladation of methyl arylglycinate derivatives has been studied. The reaction proceeds efficiently for different electron-withdrawing and electron-releasing substituents at the aryl ring. The carbonylation of the orthopalladated complexes affords, in a single step, substituted (1H)-isoindolin-1-one-3-carboxylates. These compounds constitute valuable synthetic intermediates and can be transformed diastereoselectively into octahydroisoindole-1-carboxylic acid derivatives, an important scaffold in the synthesis of many biologically active compounds. (C) 2011 Elsevier Ltd. All rights reserved.
A Brønsted Acid‐Catalyzed Michael Addition/Cyclization Sequence for the Diastereoselective Assembly of Chroman‐Bridged Polycyclic Isoindolinones
作者:Shaojing Jin、Jia Guo、Dongmei Fang、Yongwei Huang、Qilin Wang、Zhanwei Bu
DOI:10.1002/adsc.201801227
日期:2019.2
The first p‐TSA‐catalyzed highly diastereoselective Michael addition/cyclization of 3‐carboxylate‐substituted isoindolinones and ortho‐hydroxychalcones was developed to access a wide range of chroman‐bridgedpolycyclic isoindolinones. This reaction represents a novel and efficient method for the construction of complex bridgedpolycyclic isoindolinones. Moreover, several derivatizations were carried