Noble metal-free Cu(<scp>i</scp>)-anchored NHC-based MOF for highly recyclable fixation of CO<sub>2</sub> under RT and atmospheric pressure conditions
作者:Rajesh Das、C. M. Nagaraja
DOI:10.1039/d1gc01312b
日期:——
Noble metal-free, Cu(i) anchored N-heterocyclic carbene (NHC)-MOF exhibiting highly efficient fixation of CO2 into oxazolidinones, important building blocks for antibiotics at RT and atmospheric pressure conditions is presented.
无贵金属,Cu(i) 锚定的 N-杂环卡宾(NHC)-MOF 在室温和大气压条件下展现出高效固定 CO2 到噁唑烷酮中,这是抗生素的重要组成部分。
Copper-catalysed synthesis of α-alkylidene cyclic carbonates from propargylic alcohols and CO<sub>2</sub>
作者:Alejandro Cervantes-Reyes、Kaveh Farshadfar、Matthias Rudolph、Frank Rominger、Thomas Schaub、Alireza Ariafard、A. Stephen K. Hashmi
DOI:10.1039/d0gc03990j
日期:——
propargylic alcohols and carbondioxide at room temperature. By using the combination of a sterically demanding BPDPrCuCl complex (BPDPr = 1,3-bis(2,6-diisopropylphenyl)-1,3-diazonine-2-ylidene) and CsF, as catalytic system, primary propargylic alcohols are efficiently converted to the corresponding α-alkylidenecycliccarbonates. Gram scale (up to 89% yield) and reusability experiments (74% global
Robust Silver(I) Catalyst for the Carboxylative Cyclization of Propargylic Alcohols with Carbon Dioxide under Ambient Conditions
作者:Qing-Wen Song、Liang-Nian He
DOI:10.1002/adsc.201500639
日期:2016.4.14
date for this conversion, with a very high turnover number of up to 6024, probably due to the synergistic effect of Lewis basic and Lewis acidic species for the activation of both propargylic alcohol and carbon dioxide by the formation of the alkyl carbonate with a bulkier counterion. Notably, this catalyst also worked well for the carboxylative cyclization of propargylic amines with carbon dioxide with
Ionic Liquid as an Efficient Promoting Medium for Fixation of CO<sub>2</sub>: Clean Synthesis of α-Methylene Cyclic Carbonates from CO<sub>2</sub> and Propargyl Alcohols Catalyzed by Metal Salts under Mild Conditions
作者:Yanlong Gu、Feng Shi、Youquan Deng
DOI:10.1021/jo0351365
日期:2004.1.1
Reactions of propargylic alcohols with CO2 in a [BMIm][PhSO3]/CuCl catalytic system to produce the corresponding α-methylene cyclic carbonates were conducted with high yields. Mild reaction conditions, enhanced rates, improved yields, and recyclable ionicliquid catalyst systems are the remarkable features exhibited in this process. Furthermore, the use of large amounts of tertiary amines as well as
The reaction of carbon dioxide with α-ethynyl tertiary alcohols has been catalyzed by cobaltocene to give α-methylene cyclic carbonates in good yields. α-Ethynyl primary or secondary alcohols give noncyclic alkyl carbonates in fair yields.