Palladium-Catalyzed Dehydrogenative β′-Arylation of β-Keto Esters under Aerobic Conditions: Interplay of Metal and Brønsted Acids
作者:Kai-Tai Yip、Roshan Y. Nimje、Mikko V. Leskinen、Petri M. Pihko
DOI:10.1002/chem.201201988
日期:2012.10.1
The Brønsted aids: The first dehydrogenative arylation of β‐keto esters with arenes under ambient aerobic conditions is described (see scheme). Under a PdII/Brønstedacid co‐catalytic system, regioselective arylations with alkoxylated arenes and phenols were achieved in good yields, even in gram‐scale conditions.
布朗斯台德助剂:描述了在环境好氧条件下,β-酮酯与芳烃的第一次脱氢芳基化反应(参见方案)。在Pd II /布朗斯台德酸共催化体系下,即使在克级条件下,也能以良好的收率实现烷氧基化的芳烃和苯酚的区域选择性芳基化。
A rapid and highly efficient Michael addition of methoxybenzenes and indoles to α,β-unsaturated ketones using BF 3 ·OEt 2 as a catalyst
An efficient and general protocol is described for the Michaeladdition of α,β-unsaturated ketones with electron-rich arenes/indoles to give alkylated arenes/indoles under mild reaction condition at room temperature. Shorter reaction time, convenient and good isolated yields are the significant features of this protocol. Moreover, the procedure is environmentally benign in nature and applicable to