Li, Xia; Xu, Hui; Shi, Ji-Long; Hao, Huimin; Yuan, Hong; Lang, Xianjun published the artcile< Salicylic acid complexed with TiO2 for visible light-driven selective oxidation of amines into imines with air>, Recommanded Product: 4-Bromobenzylamine, the main research area is salicylic acid complexed anatase visible light selective oxidation amines; selective oxidation amine imines air.
The interplay of salicylic acid (SA) and reactive oxygen species (ROS) can modulate biotic and abiotic stress of plants, essential biol. aerobic oxidation processes. Meanwhile, ROS plays a critical role in TiO2 photocatalytic system for the degradation of organic species. Herein, we developed a system consisted of SA and TiO2 aiming at the selective oxidation of organic mols. by ROS. Interestingly, SA complexed with TiO2 leads to ligand-to-metal charge transfer (LMCT) under visible light irradiation The charge transfer from ligand (chem. adsorbed SA) to metal (conduction band of TiO2) activates O2 to ROS, superoxide (O·-2). The pos. charge located at ligand SA is connected with (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) catalysis for direct two-electron oxidation of amines and later regenerated by O·2-. SA and its derivatives were screened as ligands of TiO2 for the selective aerobic oxidation of amines into imines under blue light-emitting diode (LED) irradiation in which 5-CH3O-SA (5-methoxysalicylic acid, 0.8 mol%) complexed with anatase TiO2 and coupled with TEMPO (5 mol%) confers significantly better results than the others. By this visible light LMCT route, both primary amines and secondary amines can be selectively oxidized into corresponding imines with atm. O2 as the terminal oxidant. Importantly, the desired product of N-benzylidenebenzylamine can be isolated in 92% yield.
Applied Catalysis, B: Environmental published new progress about Amines Role: PEP (Physical, Engineering or Chemical Process), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Recommanded Product: 4-Bromobenzylamine.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary