Silver(I)-Catalyzed Three-Component Reaction of Propargylic Alcohols, Carbon Dioxide and Monohydric Alcohols: Thermodynamically Feasible Access to β-Oxopropyl Carbonates
作者:Zhi-Hua Zhou、Qing-Wen Song、Jia-Ning Xie、Ran Ma、Liang-Nian He
DOI:10.1002/asia.201600600
日期:2016.7.20
A silver(I)‐catalyzed three‐component reaction of propargylic alcohols, CO2, and monohydric alcohols was successfully developed for the synthesis of β‐oxopropyl carbonates. As such, a series of β‐oxopropyl carbonates were exclusively produced in excellent yields (up to 98 %), even under atmospheric pressure of CO2. The silver catalyst works efficiently for both the carboxylative cyclization of propargylic
sulfadiazine/nBu4NBr was described for the three-component reaction of propargylic alcohols, CO2, and monohydricalcohols. This catalytic system was demonstrated effectively to provide β-oxopropyl carbonates in excellent yields (up to 99% yield with 5 mol% catalyst). The method tolerated a wide scope of propargylic alcohols and monohydricalcohols under atmospheric CO2 pressure and solvent-free conditions. The excellent
在温和的反应条件下,例如大气压和低温下,二氧化碳的化学固定取决于催化剂的能力。在此,描述了磺胺嘧啶银/ n Bu 4 NBr的协同催化方案,用于炔丙醇,CO 2和一元醇的三组分反应。有效地证明了该催化体系可提供优异收率的碳酸β-氧代丙酯(使用5 mol%的催化剂收率可达99%)。该方法在大气CO 2压力和无溶剂条件下可耐受各种炔丙醇和一元醇。出色的催化性能归因于精心的实验证实了协同催化作用。
Clever use of natural clay materials in the synthesis of non-symmetric carbonates by utilizing CO<sub>2</sub> as a feedstock: Ag/attapulgite nano-catalyst
作者:Ruixiang Guo、Gang Wang、Weisheng Liu
DOI:10.1039/d0dt01992e
日期:——
We design a heterogeneous catalyst by taking advantage of the unique structure of Attapulgite and its ability to absorb CO2, Ag/Attapulgite Nano-catalyst, which has high activity and stability in in the CO2 fixation reaction.
Synthesis of Asymmetrical Organic Carbonates using CO<sub>2</sub>as a Feedstock in AgCl/Ionic Liquid System at Ambient Conditions
作者:Jiayin Hu、Jun Ma、Lu Lu、Qingli Qian、Zhaofu Zhang、Chao Xie、Buxing Han
DOI:10.1002/cssc.201601773
日期:2017.3.22
Synthesis of asymmetrical organic carbonates from the renewable and inexpensive CO2 is of great importance but also challenging, especially at ambientconditions. Herein, we found that some metal salt/ionic liquid catalyst systems were highly active for the synthesis of asymmetrical organic carbonates from CO2, propargylic alcohols, and primary alcohols. Especially, the AgCl/1‐butyl‐3‐methylimidazolium