625-77-4Relevant articles and documents
Synthesis of TiO2-Ag3PO4photocatalyst material with high adsorption capacity and photocatalytic activity: application in the removal of dyes and pesticides
Agyei-Tuffour, Benjamin,Efavi, Johnson K.,Manu, Gloria,Nyankson, Emmanuel
, p. 17032 - 17045 (2021/05/25)
The photocatalytic activity of TiO2can be enhanced by coupling it with other semiconductors and the semiconductor composites may find useful application in water treatment technologies. TiO2-Ag3PO4composites wer
Heterolytic (2 e) vs Homolytic (1 e) Oxidation Reactivity: N?H versus C?H Switch in the Oxidation of Lactams by Dioxirans
Annese, Cosimo,D'Accolti, Lucia,Fusco, Caterina,Licini, Giulia,Zonta, Cristiano
supporting information, p. 259 - 262 (2017/01/17)
Dioxiranes are powerful oxidants that can act via two different mechanisms: 1) homolytic (H abstraction and oxygen rebound) and 2) heterolytic (electrophilic oxidation). So far, it has been reported that the nature of the substrate dictates the reaction mode independently from the dioxirane employed. Herein, we report an unprecedented case in which the nature of the dioxirane rules the oxidation chemoselectivity. In particular, a switch from C?H to N?H oxidation is observed in the oxidation of lactams moving from dimethyl dioxirane (DDO) to methyl(trifluoromethyl)dioxirane (TFDO). A physical organic chemistry study, which combines the oxidation with two other dioxiranes methyl(fluoromethyl)dioxirane, MFDO, and methyl(difluoromethyl)dioxirane, DFDO, with computational studies, points to a diverse ability of the dioxiranes to either stabilize the homo or the heterolytic pathway.
N-Butylammonium carboxylates/Tf2O: Ionic liquid based systems for the synthesis of unsymmetrical imides via a Ritter-type reaction
Khodaei, Mohammad Mehdi,Nazari, Ehsan
experimental part, p. 2881 - 2884 (2012/07/28)
We have developed a new method for the preparation of unsymmetrical imides using liquid carboxylate salts via a Ritter-type process. The reactions were carried out with nitriles and n-butylammonium carboxylates as ionic liquids in the presence of triflic anhydride (Tf2O) as the promoter. Mild reaction conditions, simplicity of the procedure, and proton-free conditions are the main advantages of this procedure.