Methyl-N- aniline

A detailed investigation of aniline N-methylation on Cui xZnxFc204 was carried out through in situ FTIR spectroscopy. The reactants (aniline and methanol) and possible products (NMA, DMA and o-toluidine) were adsorbed on the catalysts and analyzed [106,107]. Adsorption of methanol indicated a dissociative chemisorption as methoxy species on catalyst surface at 100°C. As the temperature increased, oxidation of methoxy species to formaldehyde to dioxymethylene to formate species was observed, and above 300°C complete oxidation takes place to CO, CO2 and H2. Indeed methanol alone on Cui xZnxFc204 and Cui.xCoxFc204 behaves in a similar way [79,107]. 

A summary of aniline N-methylation mechanistic features on Cui xZnxFe204 ferrospinel catalysts is given in Figure 27. It was possible, due to in-situ IR studies, to observe a dissociative adsorption and possible orientation of reactants on the catalyst surface, their conversion to product at low temperatures, and desorption-limited kinetics, all under conditions that are close to the reaction conditions. Although Cu is the active center for the aniline A-methylation reaction, and IR studies reveal that Zn acts as the main methyl species source. 

Figure 27. Aniline N-methylation trend on Cul-xZnxFe204. Reprinted from Journal of Molecular Catalysis A, 231, Vijayaraj M., et al, 2005, 169-180 with permission from Elsevier.

Figure 28. A pictorial representation of aniline N-methylation mechanism.

SYNS BENZENAMINE, N-METHYL-N,2,4,6-TETRA-NITRO-(9CI) CE N-METHYL-N,2,4,6-TETRANITRO-ANILINE N-METHYL-N,2,4,6-TETRANITROBENZEN-ANDNE NITRAMINE PICRYLMETHYLNITR. MINE... 

N-Methylaniline Aniline, N-methyl- (8) Benzenamine, N-methyl- (9) (100-61-8) Cesium carbonate Carbonic acid, dicesium salt (9) (534-17-8)... 

Beilstein Handbook Reference) Aniline, N-methyl-N,2,4,6-tetranitro- Benzenamine, N-methyl-N,2.4,6-tetranitro- BRN 0964788 CCRIS 3143 CE EINECS 207-531-9 HSDB 2857 N-Methyl-N-picryl-nitramine N-Methyl-N,2,4,6-tetranitroaniline N-Methyl-N-2,4,6-letranitrobenzenamine Nitramine NSC 2166 Picryimethylnitramine N-Picryl-N-methyInitramine Pic-rylnitromethylamine Tetralite Tetril Tetryl 2,4,6-Tetryl ... 

The fluorescence quantum yield for benzene, phenol, ethoxybenzene, aniline, N-methyl-, A-dimethyl-, and iV-diethylaniline was enhanced following complexation with P-CD [66]. All these molecules have fluorescence quantum yields (Of) in water inferior to those in ethanol. The effect of complexation was particularly striking for aniline derivatives (a sixfold increase was reported for A-methylaniline), which can interact with water through H-bonding. The increase of Of was attributed to a decrease of the radiationless processes due, in part, to a decrease of rotation freedom and, mainly, to the expulsion of water from the cavity. 

Figure 5. The HPLC-PID chromatogram of three N-substituted anilines N-methyl, N,N -diethylaniline, and N,N -dimethylaniline. Column ...

Mostly ammonia but also pyridine, aniline, N-methyl tetrahydropyrrole, diethylamine, isopropylamine, and cyclohexylamine are used as probe particles, whose desorption is the source of information on acid centers. 

This explosive is also known as 2,4,6tetranitro-N-methyl aniline N-methyl-N,2,4,6tetranitro-benzenamine 2,4,6-... 

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