Silver tungstate: a single-component bifunctional catalyst for carboxylation of terminal alkynes with CO<sub>2</sub> in ambient conditions
作者:Chun-Xiang Guo、Bing Yu、Jia-Ning Xie、Liang-Nian He
DOI:10.1039/c4gc01638f
日期:——
The ligand-free carboxylation of various terminal alkynes promoted by Ag2WO4 was conducted at room temperature and verified with 13CO2.
各种末端炔烃的无配体羧化反应在室温下由Ag2WO4促进,并通过13CO2验证。
Cluster-based MOFs with accelerated chemical conversion of CO<sub>2</sub> through C–C bond formation
作者:Gang Xiong、Bing Yu、Jie Dong、Ying Shi、Bin Zhao、Liang-Nian He
DOI:10.1039/c7cc01136a
日期:——
We report here two cluster-based MOFs I and II as excellent heterogeneous catalysts in the carboxylation reactions of CO2 and terminal alkynes under 1 atm and mild conditions. This is the first time for MOFs materials to catalyze this type of reactions.
我们在这里报告了两种基于团簇的MOFs,标记为 I 和 II,作为优秀的杂化催化剂,用于在1大气压和温和条件下进行CO2和末端炔烃的羧化反应。这是MOFs材料首次催化这种类型的反应。
Copper(I)@Carbon-Catalyzed Carboxylation of Terminal Alkynes with CO<sub>2</sub> at Atmospheric Pressure
作者:Bing Yu、Jia-Ning Xie、Chun-Lai Zhong、Wei Li、Liang-Nian He
DOI:10.1021/acscatal.5b00764
日期:2015.7.2
Activated carbon supported CuBr was found to be an efficient catalyst for the carboxylation of terminal alkynes under atmospheric pressure of CO2 using ethylene carbonate as solvent at 80 degrees C for only 2 h, as verified with (CO2)-C-13. Various terminal alkynes could react smoothly with CO2 and organic halides under the reaction conditions to afford the corresponding carboxylic esters. In addition, the catalyst can be easily recovered and reused at least five times without significant loss of activity.
Stereoselective Silylcupration of Conjugated Alkynes in Water at Room Temperature
作者:Roscoe T. H. Linstadt、Carl A. Peterson、Daniel J. Lippincott、Carina I. Jette、Bruce H. Lipshutz
DOI:10.1002/anie.201311035
日期:2014.4.14
Micellar catalysis enables copper‐catalyzed silylcupration of a variety of electron‐deficient alkynes, thereby providing access to isomerically pure E‐ or Z‐β‐silyl‐substituted carbonyl derivatives. These reactions take place in minutes, afford high yields and stereoselectivity, and are especially tolerant of functional groups present in the substrates. The aqueous reaction medium has been successfully