Efficient Catalytic System Involving Molybdenyl Acetylacetonate and Immobilized Tributylammonium Chloride for the Direct Synthesis of Cyclic Carbonates from Carbon Dioxide and Olefins

Mesoporous Silica-Supported Ionic Liquids as Catalysts for Styrene Carbonate Synthesis from CO2

“…Molybdenum complexes next to tungsten and titanium, are among the most active transition metals used as catalysts for epoxidation using alkyl hydroperoxide as an oxidant [32]. The reaction conditions for the first step were chosen on the basis of literature report [33] and our previous experience [34]. The second stage was carried out under the best conditions, as detailed above.…”

“…Styrene carbonate was obtained in a higher yield of 60% using another three-component catalytic system in which a gold immobilized on the multi-walled carbon nanotubes was the catalyst of the epoxidation stage (80 • C, 4 h) while 1-butyl-3-methylimidazolium bromide ([bmim]Br) along with zinc bromide catalyzed CO 2 addition to epoxide (1.2 MPa at 120 • C) [36]. In our previous work, we obtained styrene carbonate with a yield of 67% using of immobilized tributylammonium chloride [34]. Sun et al used a nano-gold supported on and the shape of the vessel used.…”

Incorporation of CO2 into carbonates through carboxylation/hydration reaction

“…They are used as green reagents in organic synthesis, and building blocks in the synthesis of biocompatible polymers . Various methodologies, such as cycloaddition of epoxides with CO 2 , oxidative carbonylation of diols, carboxylation of olefins with CO 2 , and the transesterification of diols with dialkyl carbonate/urea 21 have been developed to manufacture cyclic carbonates. Among these, the carboxylation/hydration reaction between CO 2 and 1,2‐diols/1,3‐diols satisfies the requirements of green chemistry, such as lower production costs and eco‐friendly properties .…”

From Alkenes to Cyclic Carbonates with a Stable Iron‐Cross‐Bridged Cyclam Catalyst

“…[12,13] However, low selectivity towards the carbonates, formation of numerous oxidation by-products, and long reaction times are often the major problems of this reaction. [14][15][16][17][18][19] A two-step approach involving the same catalyst may be an alternative to overcome these limitations, especially, when stable and cheap catalysts can be employed. Complexes of the first-row earth-abundant transition metals, such as iron, are excellent candidates for this purpose since, on the one side, non-heme iron complexes bearing N-donor ligands have been proven to be active and selective catalysts for the epoxidation of alkenes [20,21] and, on the other side, iron complexes with N-donor ligands have demonstrated to be very active and selective catalysts for the formation of cyclic carbonate and/or polycarbonates.…”