Pd-Catalyzed C–H Carbonylation of (Hetero)arenes with Formates and Intramolecular Dehydrogenative Coupling: A Shortcut to Indolo[3,2-c]coumarins
摘要:
An efficient protocol for the synthesis of (hetero)aryl carboxylic esters has been achieved by Pd-catalyzed CH carbonylation of (hetero)arenes with aryl formates. A relatively wide range of functional groups can be tolerated in this transformation, and the corresponding esters are obtained in good yields. On this basis, an intramolecular oxidative CH/CH coupling has been developed to prepare indolo[3,2-c]coumarins.
A General Method for Palladium-Catalyzed Direct Carbonylation of Indole with Alcohol and Phenol
作者:Rui Lang、Lijun Shi、Dengfeng Li、Chungu Xia、Fuwei Li
DOI:10.1021/ol3017726
日期:2012.8.17
A novel strategy involving a first oxidative iodination and subsequent Pd-0-catalyzed carbonylation to yield indole-3-carboxylate has been developed. It showed perfect generality to indole, alcohol, and phenol. The current methodology could also be conveniently applied to the synthesis of biologically active tropisetron from simple indole and tropine.
Pd-Catalyzed C–H Carbonylation of (Hetero)arenes with Formates and Intramolecular Dehydrogenative Coupling: A Shortcut to Indolo[3,2-<i>c</i>]coumarins
作者:Jie Wu、Jingbo Lan、Siyuan Guo、Jingsong You
DOI:10.1021/ol502749b
日期:2014.11.21
An efficient protocol for the synthesis of (hetero)aryl carboxylic esters has been achieved by Pd-catalyzed CH carbonylation of (hetero)arenes with aryl formates. A relatively wide range of functional groups can be tolerated in this transformation, and the corresponding esters are obtained in good yields. On this basis, an intramolecular oxidative CH/CH coupling has been developed to prepare indolo[3,2-c]coumarins.