Prospects for the combination of mechanochemistry and flow applied to catalytic transformations

Mechanochemical solid state single electron transfer from reduced organic hydrocarbon for catalytic aryl-halide bond activation

“…substrates. Arylation of styrene proceeds smoothly with various electronically substituted arenes (28)(29)(30)(31)(32)(33)(34) to afford the desired products with up to 72% isolated yield. The variations of aryl halides with substitutions such as nitro (29), dihalo (32 and 34), and cyano (28, 30, 31 and 33) tolerated the reaction conditions very well (Fig.…”

“…17,18 A limited application of mechanical forces has been reported to form radicals by the degradation of generic polymers or by homolytic cleavage of covalent bonds. [19][20][21][22][23][24][25][26][27][28] More recently, the use of piezoelectric materials as reusable charge transfer catalysts has shown a promising impact in this growing eld. [29][30][31][32][33][34][35][36] Seminal work from Kubota, Ito, and co-workers provided the rst evidence of the mechanoredox process for C-C cross-coupling catalysis using a piezoelectric material (BaTiO 3 ).…”

Molecular scale-driven upgrading of extrusion technology for sustainable polymer processing and recycling

“…Extrusion technology, as shown in Figure 1, is one the main engineering tools for the polymer material industry, dealing with (i) polymer chemical modification, e.g. the synthesis of compatibilizers via socalled reactive extrusion technology (REX) [1][2][3][4][5], [3 * ]; (ii) polymer processing in final shapes, e.g. wind turbine blades [6]; (iii) polymer synthesis and blending, e.g.…”

Continuous Flow Catalyst-Free Mechanochemical Conversion of Isoeugenol and Vanillyl Alcohol for Vanillin Production: From Lab Experiments to Scaled-Up Premises

“…This tool employs I-CHeM (Impact/Induction in Continuous flow Heated Mechanochemistry) technology. 15,17,18 Herein, we report the upgrading of two lignin-derived platform molecules, namely, isoeugenol and vanillyl alcohol, for the synthesis of vanillin via oxidation pathways, being able to study the influence of both thermal-and mechanochemicalassisted processes. The described reactions were carried out in two loop-flow mechanochemical reactors, one at laboratory scale (DYNO-MILL Research Lab.)…”

“…20220152621), unifying the benefits from mechanical energy, thermal, and pressure activation in continuous flow with an in situ heating system. This tool employs I-CHeM (Impact/Induction in Continuous flow Heated Mechanochemistry) technology. ,, …”