Hydrogenation of CO<sub>2</sub>
-Derived Carbonates and Polycarbonates to Methanol and Diols by Metal-Ligand Cooperative Manganese Catalysis
作者:Viktoriia Zubar、Yury Lebedev、Luis Miguel Azofra、Luigi Cavallo、Osama El-Sepelgy、Magnus Rueping
DOI:10.1002/anie.201805630
日期:2018.10.8
The first base‐metal‐catalysed hydrogenation of CO2‐derived carbonates to alcohols is presented. The reaction proceeds under mild conditions in the presence of a well‐defined manganese complex with a loading as low as 0.25 mol %. The non‐precious‐metal homogenous catalytic system provides an indirect route for the conversion of CO2 into methanol with the co‐production of value‐added (vicinal) diols
Pd/C: an efficient and heterogeneous protocol for oxidative carbonylation of diols to cyclic carbonate
作者:Sujit P. Chavan、Bhalchandra M. Bhanage
DOI:10.1016/j.tetlet.2013.12.116
日期:2014.2
practical approach for the synthesis of cycliccarbonate via oxidative carbonylation of diols, glycerol, and its derivatives using Pd/C as a heterogeneous, inexpensive, and recyclable catalyst. The effect of various reaction parameters, such as solvent, base, time, and temperature was investigated and applied for the synthesis of value added cycliccarbonates in a good to excellent yield within shorter
Synthesis, Characterization and Catalytic Application of Pyridine-Bridged N-Heterocyclic Carbene-Ruthenium Complexes in the Hydrogenation of Carbonates
作者:Jiangbo Chen、Haibo Zhu、Jinjin Chen、Zhang-Gao Le、Tao Tu
DOI:10.1002/asia.201701303
日期:2017.11.2
synthesized; these exhibited very high catalytic activity in the hydrogenation of cyclic and linear carbonates under mild reaction conditions. In the presence of catalytic amounts of a weakbase, a broad range of substrates with different ring size and steric bulk were well tolerated, providing methanol and the corresponding diols in excellent yields with a catalyst loading as low as 0.5 mol %.
Transfer hydrogenation of cyclic carbonates and polycarbonate to methanol and diols by iron pincer catalysts
作者:Xin Liu、Johannes G. de Vries、Thomas Werner
DOI:10.1039/c9gc02052g
日期:——
as the catalyst for the transfer hydrogenation of cycliccarbonates to methanol and diols. The advantage of this method is the use of isopropanol as the hydrogen source, thus avoiding the handling of flammable hydrogen under high pressure. The reaction offers an indirect route for the reduction of CO2 to methanol. In addition, poly(propylenecarbonate) was converted to methanol and propylene glycol
Versatile and scalable synthesis of cyclic organic carbonates under organocatalytic continuous flow conditions
作者:Romaric Gérardy、Julien Estager、Patricia Luis、Damien P. Debecker、Jean-Christophe M. Monbaliu
DOI:10.1039/c9cy01659g
日期:——
epoxides. In this work, cyclic organic carbonates are prepared according to alternative sustainable and intensified continuousflow conditions from the corresponding 1,2-diols. The process utilizes dimethyl carbonate (DMC) as a low toxicity carbonation reagent and relies on the organocatalytic activity of widely available and cheap organic ammonium and phosphonium salts. Glycerol is selected as a model