Pd-Catalyzed Direct and Selective CH Functionalization: C3-Acetoxylation of Indoles
作者:Qiang Liu、Gang Li、Hong Yi、Pan Wu、Jie Liu、Aiwen Lei
DOI:10.1002/chem.201002547
日期:2011.2.18
one! A novel Pd‐catalyzed direct and selectiveC3‐acetoxylation of indole derivatives has been accomplished (see scheme). This selective CH activation reaction was implemented without the assistance of directing groups and took place undermildconditions. The kinetic study revealed that the reaction was zero‐order with respect to the oxidant and first‐order with respect to the indole derivatives.
A novel Cu(OAc)2-catalysed direct C–H bond oxidative acetoxylation and iodination of indoles using PhI(OAc)2 as a terminal oxidant is reported. Adopting this method, a series of 3-iodoindoles and indol-3-ylacetates were obtained in nearly 1:1 ratio yield.