A hydrocarboxylation reaction of alkyne or styrene derivatives with CO2 proceeded smoothly by using an air-stable nano-sized nickel catalyst supported on sulfur-modified gold (SANi), giving functio...
通过使用负载在硫改性金(SANi)上的空气稳定纳米镍催化剂,炔烃或苯乙烯衍生物与 CO2 的加氢羧化反应顺利进行,赋予...
Ag(I)-Catalyzed [3 + 2]-Annulation of Cyclopropenones and Formamides via C–C Bond Cleavage
作者:Jiang-Tao Ren、Jia-Xin Wang、Hu Tian、Jing-Lei Xu、Hong Hu、Muhammad Aslam、Meng Sun
DOI:10.1021/acs.orglett.8b02612
日期:2018.11.2
An unprecedented Ag-catalyzed [3 + 2]-annulation of cyclopropenones and DMF via C–C bond cleavage is disclosed. This protocol exhibited excellent chemo- and regio-selectivity, and tolerated various functional groups. More importantly, DMF served as the C═O bond in the cycloaddition reaction, providing an efficient way to construct γ-aminobutenolides. In addition, transesterification reaction occurred
Getting a fix: The copper‐catalyzed hydrocarboxylation of alkynes using carbon dioxide in the presence of a hydrosilane, which serves as a reducing agent, has been developed (see scheme). Copperfluorides bearing N‐heterocyclic carbene ligands such as IMes and Cl2IPr show high catalytic activities.