Allyl–aryl coupling of allylic carbonates with arylboronic acids catalyzed by palladium nanoparticles in ionic liquid
作者:Jing Xu、Xing Zhai、Xue Wu、Yong Jian Zhang
DOI:10.1016/j.tet.2015.01.046
日期:2015.3
A practical and greener process for the allyl–aryl coupling of allylic carbonates with arylboronicacids catalyzed by in situ generated palladium nanoparticles (PdNPs) in ionic liquid (IL) has been described. The PdNPs showed high catalytic activity for the coupling reaction in the IL to afford allyl–aryl coupling products in good to high yields with complete regio- and E/Z selectivities. The PdNPs
We report on a study of copper-catalyzed alkylation of internal allylic carbonates using functionalized alkyl and aryl Grignardreagents. The reactions exhibit good regioselectivity for either SN2 or SN2′ products, enabling the preparation of products with E-alkene selectivity. Density functional theory (DFT) calculations reveal the origins of the regioselectivity based on the different behaviors of
我们报告了使用官能化烷基和芳基格氏试剂铜催化内烯丙基碳酸酯烷基化的研究。该反应对S N 2 或S N 2' 产物表现出良好的区域选择性,使得能够制备具有E-烯烃选择性的产物。密度泛函理论(DFT)计算揭示了基于同铜酸盐和异铜酸盐的不同行为的区域选择性的起源。