2,4,5 -Trimethy lamine

Experiments made at higher degrees of aggregation have provided strong evidence192 for ring-like structures for mixed neutral clusters. For example, under a wide variety of experimental conditions, mixed cluster ions display a maximum intensity atm = 2(n + 1) whenn<5 for (NH3)II (M)mH+, andm = n + 2 whenn<4 for (H20)B(M)mH+ M is a proton acceptor such as acetone, pyridine, and trimethy-lamine. These findings reveal that the cluster ions with these compositions have stable solvation shell structures as discussed above. 

The extraction of the desired product from the sorbent and the stable regeneration of the resin for further use are essential. The regeneration of some of these sorbents by methanol has also been tested (23). Hot water regeneration has been proposed as well (24). Back extraction with trimethy-lamine has been tested for succinic acid with consideration of formation of a succinate ester (13,25). 

Atkinson, R., Perry, R.A., Pitts, J.N., Jr. (1978b) Rate constants for the reactions of hydroxyl radical with dimethylamine, trimethy-lamine, and ethylamine over the temperature range 298 -26 K. J. Chem. Phys. 68, 1850-1853. 

The enol of glycine (4) has been generated by neutralization with trimethy-lamine of the corresponding cation-radical (4+ ) prepared by dissociative ionization of isoleucine (Scheme 3) [71]. The +NR+ mass spectrum of 4+ showed a substantial survivor ion attesting to the stability of isolated 4. In contrast, the survivor ion from glycine (5) is much less stable and appears as a very minor peak in the +NR+ mass spectrum of 5, in spite of the fact that neutral 5 is thermodynamically more stable than 4. 

Application Tb produce mono- (MMA), di- (DMA) and trimethy-lamines (TMA) from methanol and ammonia. 

Steenkamp, D. J., and Gallup, M., 1978,The natural flavoprotein electron acceptor of trimethy-lamine dehydrogenase. J. Biol. Client. 253 4086n4089. 

Sulfur trioxide (SO3) is an industrially important compound key to the production of sulfuric acid. It tends to polymeric forms both in the solid and liquid states. As a gas, the molecules have a planar triangular structure in which the sulfur atom has a high affinity for electrons. This explains its action as a strong Lewis acid towards bases that it does not oxidize. It can thus crystallize complexes with pyridine or trimethy-lamine. It has a very strong affinity for water and hence rapidly associates with water in the environment. 

Nucleophilic substitution at an alkyl carbon is said to alkylate the nucleophile. For example, the above reaction between RI and NMes is an alkylation of trimethy-lamine. Similarly, nucleophilic substitution at an acyl carbon is an acylation of the nucleophile. 

Fig. 6.26. Temperature for 50% conversion in the catalytic combustion of hydrocarbons lwt% Pd/AbOs and Pt/ApOs were prepared by IMP. 1 19 Au/support catalysts were prepared by CP and calcined in air at 673 K. (I) 1 wt% Pd/Al203 (II) lwt% Pt/ApOa (III) 10wt% Au/Fe203 (IV) 10wt% Au/ZnFe204 (V) 10wt% Au/NiFe204 (VI) 10 wt% AU/C03O4. (A) Methane (B) propene (C) trimethy-lamine (D) propane. The concentrations of reactant gases in air was CH4 0.25 vol% CaHs and CsHe 0.1 vol% (CH3)3N 0.05 vol% balanced with air to 1 atm SV 2 X 10" ml g th (based on [535])...

Trimethy lamine oxide perchlorate, see Trimethylhydroxylammonium perchlorate, 1323... 

It is evident from the above that each of the amines of a group has a different dissociation constant and therefore a different basicity. I have found that this fact enables me to accomplish a separation of certain of the amines from the others. Even though each of the primary, secondary and tertiary amines in one group has a different basicity, it is not economically feasible with any process to separate those which have approximately the same basicity, for example, in the case of the methyl-amines, it is entirely practical to treat a mixture of the three amine salts with a quantity of alkali stoichiometrically equivalent to the trimethy-lamine present in the mixture and subsequently to boil out or otherwise remove the liberated trimethylamine. It is not, however, economically possible to obtain a sharp separation by treating the resulting residue of mono and dimethylamine saits with a further quantity of alkali equivalent to the monomethylamine and boil - the solution to obtain monomethylamine. The difference in basicity between the mono and dimethylamines is so small that good separation is not obtained. 

Few investigations have been devoted to the degradation of alkylamines although there has been considerable interest in the metabolism of trimethy-lamine, choline, and glycine betaine as a source of methane in marine sediments (King 1984). Two aspects of the metabolism of N-alkyl compounds may be used as illustration. 

Hippe, H., D. Caspari, K. Fiebig, and G. Gottschalk. 1979. Utilization of trimethy-lamine and other N-methyl compounds for growth and methane formation by Methanosarcina barkeri. Proc. Natl. Acad. Sci. U.S.A. 76 494—498. 

Alkyl side chains of aromatics to alcohols for example, n-propylbenzene to 3-phenylpropan-l-ol, 3-phenylpro-pan-2-ol, 3-phenylpropan-3-ol and hexane trimethylamine to trimethy-lamine oxide... 

The typical aroma substances of egg white and egg yolk are still unknown. The fishy aroma defect that can occur in eggs is caused by trimethy-lamine TMA, which has an odor threshold that depends on the pH (25 pg/kg, pH 7.9) because only the undissociated form is odor active. TMA is formed by the microbial degradation of choline, e. g., on feeding fish meal or soy meal. Normally, TMA does not interfere because it is enzymatically oxidized to odorless TMA oxide. However, in feed, e. g., soy meal, substances exist which could inhibit this reaction. 

The first acyclic amines methylamine CH3NH2, dimethylamine (CH3)2NH, trimethy-lamine (CH3)3N and ethylamine C2H5NH2 are gases at room temperature the next ones are liquids or solids, depending on their molecular weight. 

N-(Chlorocarbony loxy)trimethy lurea, 1924 2-Chloro-5 -methy Ipheny Ihy droxy lamine, 2796 2-Cyano-2-propyl nitrate, 1506... 

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