Graphite oxide as catalyst for diastereoselective Mukaiyama aldol reaction of 2-(trimethylsilyloxy)furan in solvent free conditions

Nanoporous Crystalline Composite Aerogels with Reduced Graphene Oxide

“…Graphene oxide (GO) and other carbon-based oxides have long been highly attractive for use as catalysts, catalyst carriers, and catalytic reagents in organic molecule transformations [ 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ] due to their unique characteristics, which include enriched chemical structures, functional active sites (acidic and basic), wreckages, defects, unpaired π-electrons of carbon, and larger specific surface areas. Moreover, the addition of carbon-based materials has been also shown to improve the efficiency of metal oxide photocatalysts [ 50 , 51 ].…”

A Metal-Free Carbon-Based Catalyst: An Overview and Directions for Future Research

“…In carbon-based materials, the carbon-bonded structures give a major contribution to induce the catalytic processes. For example, graphite oxide (GO) or functionalized graphene oxide materials are widely and successfully used in oxidation reactions, [24][25][26], olefin hydrogenation [27], Friedel-Crafts reactions [28,29], Mukaiyama-Michael additions [30,31], polymerizations [32], crosslinking reactions [33], epoxide ring-opening reactions [34,35], one-pot reactions [36], and multi-component reactions [37,38] owing to their low cost, structural tunability, huge π-conjugation, and co-existence of nitrogen and oxygen groups in the graphene (Gr) sheets, along with structural defects and active sites provided by various dopants [39][40][41][42][43]. Very recently, GO has drawn attention as a metal-free catalyst for synthesizing 1,5-benzodiazepines [44] because it possesses a large specific surface area with many oxygen functional groups (carboxyl, hydroxyl, epoxide, and lactone), and therefore, GO can be considered as a potential catalyst for synthesis of some biologically and pharmacologically relevant benzodiazepine compounds.…”

Graphene‐Based Carbocatalysts for Thermoset Polymers and for Diastereoselective and Enantioselective Organic Synthesis

“…In particular,i ti ss hown that the main drawbacks of carbocatalysts, that is, high catalyst loading (in weight amountsc lose to those of the reactants) and generally poor selectivity,c an often be removed by operating under solventfree conditions. [23][24][25][26][27][28][29] The third section is devoted to the dual role of graphene-based materials,t hat is, as ac atalysta nd as a filler,f or thermoset polymers. [29][30][31][32][33][34][35] The fourth sectiond escribes reactions that are catalyzed not only by graphene oxide (being acidic and rich of functional groups) but also by HSAG.The observed behavior is rationalized by the predominant catalytic role of p stacking of the aromatic substrates with the graphitic planes.…”

“…In the second section, the catalytic activity of graphene oxide for some relevant organic reactions is presented. In particular, it is shown that the main drawbacks of carbocatalysts, that is, high catalyst loading (in weight amounts close to those of the reactants) and generally poor selectivity, can often be removed by operating under solvent‐free conditions . The third section is devoted to the dual role of graphene‐based materials, that is, as a catalyst and as a filler, for thermoset polymers .…”