作者:Zongyang Li、Shiyang Xu、Baoliang Huang、Chenhui Yuan、Wenxu Chang、Bin Fu、Lei Jiao、Peng Wang、Zhenhua Zhang
DOI:10.1021/acs.joc.9b01048
日期:2019.8.2
provides facile access to acyl ureas. In addition, a mechanistic study was carried out by both experiment and DFT calculation. Control experiments and kinetic study revealed that the real active palladium species were Pd(0). The result of kinetic study suggested that palladium catalyst, azide, and CO were all involved in the turnover-limiting step except for amine. Further DFT study suggested that an
近年来,已广泛开发了Pd催化的叠氮化物与CO反应生成异氰酸酯中间体的方法。然而,尚未报道敏感的酰基叠氮化物的催化羰基化。在本文中,我们报道了酰基叠氮化物的简单Pd催化羰基化反应,具有广泛的底物范围,高效率以及在温和条件下的简单操作,可轻松获得酰基脲。此外,还通过实验和DFT计算进行了机理研究。对照实验和动力学研究表明,真正的活性钯物质为Pd(0)。动力学研究的结果表明,除胺外,钯催化剂,叠氮化物和一氧化碳都参与了营业额限制步骤。