Synthesis of a Magnetic Core-shell Fe3O4@Cu3(BTC)2 Catalyst and Its Application in Aerobic Olefin Epoxidation

Core–Shell Catalysts for Conventional Oxidation of Alcohols: A Brief Review

“…This composite shows a higher catalytic activity in the presence of electron donating groups (MeO) compared to the electron withdrawing groups (F) (entries 2 and 3, Table 11). This material also shows excellent catalytic activity for the unsubstituted benzyl alcohol (entry 1, Table 11) [56]. In 2023, Hou et al applied the Fe 3 O 4 @Cu 3 (BTC) 2 core-shell in the aerobic oxidation of benzyl alcohols studying the effect of different substituents.…”

“…This composite shows a higher catalytic activity in the presence of electron donating groups (MeO) compared to the electron withdrawing groups (F) (entries 2 and 3, Table 11). This material also shows excellent catalytic activity for the unsubstituted benzyl alcohol (entry 1, Table 11) [56]. Recently, Dabiri et al synthesized the Fe3O4@PDA/Pd@N-RGO core-shell which consists of a magnetite core coated with polydopamine (PDA), to which palladium nanoparticles are subsequently immobilized to this set.…”

“…This composite shows a higher catalytic activity in the presence of electron donating groups (MeO) compared to the electron withdrawing groups (F) (entries 2 and 3, Table 11). This material also shows excellent catalytic activity for the unsubstituted benzyl alcohol (entry 1, Table 11) [56]. a Reaction conditions: substrate (0.5 mmol), Fe3O4@Cu3(BTC)2 (1% molar fraction based on Cu), CH3CN (2.5 mL), NaHCO3 (0.5 mmol), TEMPO (0.25 mmol), 60 °C and 12 h under 1 atm O2.…”

“…More recently, Hou et al aerobically oxidized 1-phenylethanol using the core-shell Fe 3 O 4 @Cu 3 (BTC) 2 as the catalyst. A yield of 57% acetophenone was obtained after 12 h (Entry 6, Table 13) [56]. Ardakani et al tested the catalytic activity of the composite CoFe 2 O 4 @SiO 2 @[MoO 2 (salenac-OH)] in the same reaction using t BuOOH as oxidant (acetophenone yield of 75%, entry 7, Table 13).…”

“…The new Cu II -OOH intermediate would then react with water to form the Cu II -OH and H 2 O 2 species (the latter reduced to H 2 O and O 2 in the presence of Cu). Finally, Cu II -OH reacts to form Cu II -alkoxide, followed by abstraction of the H atom by TEMPO [56].…”