Trimethyl phenyl ammonium

A polypyrrole film electrochemically deposited on gold electrodes from an MeCN-liCl04/Co(OAc)2 solution shows electrocatalytic activity in dioxygen reduction [404]. The catalytic electroreduction of dithio dipropionic acid (PSSP) with the water-soluhle cohalt(II I)tetrakis(4-trimethyl-ammonium phenyl) porphyrin (CoTMAP) has heen studied. The Co catalyst adsorbed on the glassy carbon electrode plays a major role in the electroreductive cleavage of the S—S bond [405]. 

That some modification to the position so far described might be necessary was indicated by some experiments of Nesmeyanov and his co-workers. Amongst other compounds they nitrated phenyl trimethyl ammonium and triphenyloxonium tetrafluoroborates with mixed acid the former gave 96 % of m- and 4 % of -nitro compound (88 % total yield), whilst the latter gave 80% of the tri-(p-nitrophenyl)oxonium salt. Ridd and his co-workers have made a quantitative study of the phenyl trimethyl ammonium ion. Their results, and those of other recent workers on the nitration of several cations, are collected in table 9.3. 

D,L-3-Hydroxy-N-methyl-morphinan Phenyl trimethyl ammonium chloride D-Tartaric acid... 

The methylation of 51.4 parts by weight of D,L-3-hydroxy-N-methyl-morphinan is carried out with a methylating solution obtained from 51.5 parts by weight of phenyl-trimethyl-ammonium-chloride. The D,L-3-methoxy-N-methyl-morphinan is isolated in the form of its hydrobromide, which melts with 1 mol of water at 92°-94°C, without water at 239°-240°C. The base isolated from the aqueous solution by means of sodium carbonate melts at 81°-83 C. 

Sebacid acid dinitrile, 50, 20 SELECTIVE o-BROMINATION OF AN ARALKYL KETONE WITH PHENYL-TRIMETHYL AMMONIUM TRIBROMIDE 2-BRQM0ACETYL-6-METH-OXYNAPHTHALENE AND 2,2-DI-BROMOACETYL-6-METHOXYNAPH-THALENE, 53, 111 Shikimic acid, 50, 27 Silver benzoate, as catalyst in decomposition of diazoketones, 50, 78... 

In einigen Fallen [z.B. bei der Reduktion von Benzyl-trimethyl-ammonium-jodid und von (l-Phenyl-ethyl)-trimethyl-ammonium-jodid] wird jedoch teilweise Oder bevorzugt an-stelle von Methan ein anderer Kohlenwasserstoff abgespalten [z.B. Toluol bzw. Ethyl-benzol], Die Methode ist also nicht allgemein anwendbar. In den folgenden Fallen erhalt man jedoch gute Ausbeuten an Demethylierungsprodukt ... 

CMCs of these polyfluorinated surfactants are of the order of 10 5 m.47 Plots of the observed H chemical shifts versus surfactant concentration of cetyl trimethyl ammonium chloride, cetyl pyridinium chloride, cetyl dimethyl phenyl ammonium chloride, cetyl dimethyl benzyl ammonium chloride, cetyl dimethy 1-2-phenyl ethyl ammonium chloride, and cetyl dimethyl-3-phenyl propyl ammonium chloride, are sigmoidal and were fitted to a model based on the mass action. The H chemical shift-based CMC values are in excellent agreement with those determined by the surface tension method.48 The micellization processes of dodecyl trimethyl ammonium halides (chloride and bromide) studied by calorimetric titration show different behaviors at 298 K. However, these disappear at 313 K, while the results measured by the chemical shift versus surfactant concentration do not show this difference.49 The CMC of 3-aminopropyl triethoxy silane in toluene is ca. 0.47m, measured by H and l3C chemical shifts.50 The CMC of optically active potassium A -n-dodecanoyl alaminate measured by H and l3C chemical shifts is lower (11-15 him) in D20 than that in a mixed solvent of 1,4-dioxane and D20 (19mM).-51 The H chemical shift shows that the CMC of resorcinol-type calix[4] phosphoric esters having four alkyl side-chains, [4]Ar 5P-R-n, is insensitive to the length of the side-chains, n.52 The CMC values of a family of surfactants, the sodium cyclohexyl alkanoates, with different lengths of the alkanoate side-chains, were obtained from 13C chemical-shift measurements. The results show that these amphiphiles have high CMCs (0.12-1.02 m).-53... 

NMR study of mero-tetrakis-(l-methyl pyridinium-4-yl)-porphyrin with SDS and Triton X-100 indicates that it interacts with SDS and exists as monomeric entities in the anionic SDS micelles. No interaction is observed with cetyl trimethyl ammonium bromide and Triton X-100. The intercalation appears to be due to coloumbic rather than hydrophobic interactions.230 Interactions of water-insoluble mono-para-phenyl-substituted tetraphenyl porphyrins with tetra-decane trimethyl ammonium bromide, SDS and Triton X-100 have been studied by H and l3C NMR spectroscopy in detail.231... 

Chemicals. N,N-dimethyldodecylamine-N-oxide (DDAO) and cetyl trimethyl-ammonium bromide (CTAB) were purchased from Fluka Chemical Corp. Cetyl pyridinium chloride (CPC) and polyoxyethylene nonyl phenyl ether, with an average degree of polymerization of 10 (NP(EO)2q) were obtained from Hexacel Corp. and... 

This sensitivity toward lateral attacks explains the four times shorter duration of action of sila-meprobamate compared to its carbon isostere on a model of tranquiUizing activity in mice (rotarod test, potentiation of hexobarbital-induced sleep, and intraperitoneal injection). " On the other hand, when given orally, sila-meprobamate is practically inactive. One of the first metabolites formed has been characterized as being a di-siloxane (Figure 15.67). For the two phenyl-trimethylsilyl-derived AChE inhibitors, the rather positively charged trimethyl-silyl group mimics the trimethyl-ammonium function present in acetylcholine. Eor these compound metabolic oxidation does not take place on the silicon, but on one of methyl groups (S1-CH3 Si—CH2—OH). ... 

Phenyl-oxirane werden an Platin-Katalysatoren im Gegensatz zu den 2-Phenyl-aziridi-nen unter Inversion hydrogenolysiert7. Die Debenzylierung von S-(+)-2-Dimethylami-no-2-phenyl-propansaure und ihren Derivaten mit Palladium/Kohle in Athanol verlauft unter Inversion (72-99%), die des quartaren Trimethyl-ammonium-Derivates unter Ra-cemisierung8 ... 

Somani, S.M. and Anderson, J.H., In vitro glucuronization of 3-hydroxy-phenyl-trimethyl ammonium by rat liver microsomes, Drug Metabol. Dispos., 5, 15, 1977. 

The data show that both techniques yield consistent results. However, different ionization ratios have been evaluated at the same acidity for methyl phenyl phosphinate by following the CH3 or OCH3 proton resonance chemical shifts with respect to the trimethyl-ammonium ion (Curci et al., 1973). This evokes a word of caution in the use of internal standards, although in many cases (see Fig. 1) very good results have been obtained. 

Phenyl trimethyl ammonium chloride Hydrogen bromide... 

Benzene, 1 -(1 -isocyanato-1 -methylethyl)-3-(1 -methylethenyl)-. See 3-[(Prop-1-en-2-yl) phenyl] prop-2-yl isocyanate Benzene isopropyl. See Cumene Benzene, (2-isothiocyanatoethyl)-. See Phenethyl isothiocyanate Benzenemethaminium, N,N,N-trimethyl-, hydroxide. See Benzyl trimethyl ammonium hydroxide... 

Benzyl trimethyl ammonium hydroxide Cetrimonium bromide Dimethyl diallyl ammonium chloride Laurtrimonium bromide Laurtrimonium chloride Methyl tributyl ammonium chloride Tetrabutyl ammonium bromide Tetrabutyl ammonium chloride Tetrabutyl ammonium fluoride Tetra-n-butyl ammonium hydrogen sulfate Tetra-n-butyl ammonium hydroxide Tetrabutyl ammonium iodide Tetrabutylphosphonium acetate, monoacetic acid Tetrabutylphosphonium bromide Tetrabutylphosphonium chloride Tetraethylammonium bromide Tetraethylammonium hydroxide Tetrakis (hydroxymethyl) phosphonium chloride Tetramethylammonium bromide Tetramethylammonium chloride Tetramethylammonium hydroxide Tetramethyl ammonium iodide Tetraphenyl phosphonium bromide Tetrapropyl ammonium bromide Tetrapropyl ammonium iodide Tributylamine Tributyl phosphine Tributyl (tetradecyl) phosphonium chloride Trioctyl (octadecyl) phosphonium iodide catalyst, phase-transfer Tetraethylammonium chloride Tetraoctylphosphonium bromide Tri-n-butyl methyl ammonium chloride Tri methyl phenyl ammonium hydroxide catalyst, phenolics Triethylamine... 

In order to obtain 3-fluoro-5-phenyl-l,2,4-triazine 22 from the corresponding 3-chloro derivative 20 the chlorine atom has to be displaced first with the trimethyl-ammonium fragment (compound 21), which undergoes easily the fluorination reaction by action of potassium fluoride to give 3-fluoro-l,2,4-triazine 22 in addition to 3-dimethylamino-5-phenyl-l,2,4-triazine23 [21] (Schane 13). 

Jing, H. Chang, T Jin, L. Wu, M. Qiu, W. Ruthenium Salen/Phenyl Trimethyl Ammonium Tribromide Catalyzed Coupling Reaction of Carbon Dioxide and Epoxides. Catal. Comm. 2007, 8, 1630-1634. 

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