Dodecylamine, N methyl

Dodecenoic acid, 37, 31 DodECYLAMINE, N methyl, 36, 48 n Dodecyl fluoride, 36, 42 Doebner reaction, 31, 35... 

Amination and N methylation of methyl dodecanoate or dodecanoic acid, hydrogenation and N methylation of dodecylnitrile, N methylation of dodecylamine in presence of copper-chromium catalysts. 

SYNS N-METHYL-N-NTTROSOLAURYLAMINE N-NITROSO-N-METHYL-N-DODECYLAMIN (GERMAN) N-NITROSO-N-METHYL-N-DODECYLAMINE ... 

NITROSOMETHYL-n-DODECYLAMINE see NKUOOO N-NITROSO-N-METHYL-N-DODECYLA. nNE see NKUOOO... 

Al-HMS mesoporous molecular sieves with Si/Al ratio in the range 10-40 were synthesized by using dodecylamine as template. They were characterized by XRD, N2 adsorption, MAS NMR, and DRIFT, and their acid properties were determined by pyridine (PY) adsorption. Aniline methylation was a pseudo-first-order process with respect to aniline concentration. Alkylation is a sequential reaction process, in which methylation of aniline produces N-methylaniline (NMA), then N,N-dimethylaniline (NNDMA) and subsequently N,N-dimethyltoluidines (NNDMT, p- > o-). N-methylation products (NMA+NNDMA) were predominant with a selectivity over 97 mol% at 573 K. 

Relationships connecting stmcture and properties of primary alkylamines of normal stmcture C, -C gin chloroform and other solvents with their ability to extract Rh(III) and Ru(III) HCA from chloride solutions have been studied. The out-sphere mechanism of extraction and composition of extracted associates has been ascertained by UV-VIS-, IR-, and H-NMR spectroscopy, saturation method, and analysis of organic phase. Tertiary alkylamines i.e. tri-n-octylamine, tribenzylamine do not extract Ru(III) and Rh(III) HCA. The decrease of radical volume of tertiary alkylamines by changing of two alkyl radicals to methyl make it possible to diminish steric effects and to use tertiary alkylamines with different radicals such as dimethyl-n-dodecylamine which has not been used previously for the extraction of Rh(III), Ru(III) HCA with localized charge. 

Table 1 shows that methyl dodecanoate is easily converted into amine in the presence of CuCr deposited on alumina or on titania. Nevertheless one can observe that the methylation reaction is rather difficult and favoured by alumina. Moreover, a significant increase of N-dimethyl dodecylamine is obtained when the reaction is carried out with a large excess of hydrogen. Due to the mechanism of the reaction this is unexpected indeed it is generally considered that the methylation of primary amine with methanol requires i) the dehydrogenation of alcohol into a carbonyl compound and ii) a further reaction of this compound with primary amine or secondary amine via imine or enamine intermediates. 

In an effort to understand better the catalytic chemistry associated with this reaction, the reactivity of dodecylnitrile or dodecylamine was measured under the same experimental conditions. The results listed in Table 1 show that the nitrile and the primary amine are much more easily transformed into N-dimethylalkylamine than the ester or the acid (Table 2). The rate determining step in the methylation process is directly related to one of the first reactions converting the ester or the acid into nitrile. It can be assumed that ... 

Membrane PVC (Plasticized) K Valinomycin Na 14 18 Methyl Monensin Cl <1ammonium chloride HC03<8,9) 4-butyltrifluorophenone Trioctylammonium chloride H (6 7> Tri-n-dodecylamine 10... 

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