107553-80-0Relevant academic research and scientific papers
Photocatalytic reaction of aryl amines/alcohols on TiO2 nanoparticles
Hosseinnia, Azarmidokht,Pazouki, Mohammad,Karimian, Ketauon
, p. 937 - 945 (2010)
In this article, the photocatalytic reaction of aniline and 4-amino N, N dimethyl aniline with methanol, ethanol and isopropanol on anatase TiO 2 nano-particles under UV (365 nm wavelength) irradiation was examined. The concentration of unreacted aryl amines and products was measured by gas chromatography picks integration, and then the products were identified by mass spectroscopy analysis. By making a comparison within the rates of photocatalysis of each aryl amine in different alcohols under various irradiation times, it was revealed that, in all cases, the sequence of photocatalysis rate was methanol > ethanol > isopropanol. In reactions where the concentrations of aryl amine were lower than 10 mmol/L, imines were the main products and alkylation of amines was not observed. In the higher concentration of aryl amines, oxidation and dimerization occurred.
New approaches to photocatalytic reaction of low concentrations of arylamines in alcohols
Hosseinnia, Azarmidokht,Keyanpour-Rad, Mansoor
, p. 1411 - 1420 (2012/11/07)
Photocatalytic interactions of a series of arylamines, for example 1,4- phenylenediamine, 1,2-phenylenediamine, 4-aminophenol, and 2-aminophenol, at low concentrations in typical primary alcohols have been investigated in the presence of anatase TiO2 nanopowder. GC-MS analysis of the irradiated solutions showed that, except for 1,2-phenylenediamine, 10 mmol/l alcoholic solutions of the arylamines gave predominately the corresponding imines. Irradiation of 2-aminophenol under these conditions, led to oxidation and dimerization to 2-amino-3Hphenoxazin- 3-one. Springer Science+Business Media B.V. 2012.
THERMAL Z,E-ISOMERIZATION OF IMINES. IV. ANILS OF ACETONE
Prosyanik, A. V.,Kol'tsov, N. Yu.,Romanchenko, V. A.
, p. 1330 - 1337 (2007/10/02)
It has been established by the correlation between the values of log k298 and the ? constants that the degenerate thermal Z,E-isomerization of anils of acetone takes place according to an inversion mechanism, with the exception of acetone p-dimethylaminophenylimine, which isomerizes predominantly according to a rotation mechanism.The increase in the steric stresses upon the introduction of ortho substituents into the aryl ring of anils of acetone results in significant lowering of the barriers to the inversion of the nitrogen atom.The raising of the barriers to inversion in phenylimines as the electron-acceptor properties of the substituents on the imino carbon atom are enhanced is due to the weakening of the n?N-?*Ph interaction as a consequence of the increase in the energy gap between the interacting orbitals as a result of the lowering of the energy of the n?N orbital.
