Selective Palladium-Catalyzed Carbonylation of Alkynes: An Atom-Economic Synthesis of 1,4-Dicarboxylic Acid Diesters
作者:Jiawang Liu、Kaiwu Dong、Robert Franke、Helfried Neumann、Ralf Jackstell、Matthias Beller
DOI:10.1021/jacs.8b05852
日期:2018.8.15
dialkoxycarbonylation of various aromatic and aliphatic alkynes affording a wide range of 1,4-dicarboxylic acid diesters in high yields and selectivities. Kinetic studies suggest the generation of 1,4-dicarboxylic acid diesters via cascade hydroesterification of the corresponding alkynes. Based on these investigations, the chemo- and regioselectivities of alkyne carbonylations can be controlled as shown by switching
首次设计合成了一类带有吡啶取代基的新型二膦配体。所得的 L1 钯配合物允许对各种芳香族和脂肪族炔烃进行化学和区域选择性二烷氧基羰基化,以高产率和选择性提供范围广泛的 1,4-二羧酸二酯。动力学研究表明通过相应炔烃的级联加氢酯化生成 1,4-二羧酸二酯。基于这些研究,炔烃羰基化的化学和区域选择性可以通过将配体从 L1 切换到 L3 或 L9 以得到 α,β-不饱和酯来控制。