Tri methyl ammonium

J. Haberman T.C. Castorina, The Surface Chemistry of HMX , PATR 3089 (1963) [A study was made of the solution-adsorption properties of HMX using a 14C labeled quarternary ammonium salt, stearyl tri-methyl ammonium bromide (STAB). The solvent system used consisted of 10% ethanol and 90% w. The solution-adsorption system isotherms for 10-micron HMX were measured. The authors conclude that an H-type Langmuir adsorption isotherm is obtd, the adsorption of STAB on HMX is reversible and therefore physi-... 

Key Words Raf-1 Antisense oligonucleotide siRNA Cationic liposomes Dimyristoyl 1,2-diacy 1-3-tri methyl ammonium-propane (DMTAP) Systemic delivery Toxicology Pharmacokinetics and biodistribution Ionizing radiation Prostate cancer. 

A novel acyclic SOjH-functional Brdnsted acidic halogen-free TSIL that bears a butane sulfonic acid group in an acyclic tri-methyl-ammonium cation has been synthesized (Fig. 12.65) [40] and used as the catalyst for one-pot three-component Mannich reaction (Fig. 12.66). The procedure was made up of two-step atom economic reaction. The zwitterionic-type precursor (trimethylammonium butane sulfonate) was prepared through a one-step direct sulfonation reaction of trimeth-ylamine and 1,4-butanesulfone. The zwitterion acidification was accomplished by... 

The study of these fluorine-containing salts was then extended, and we prepared other new compounds in this series, e.g. 2-fluoroethyl glycine hydrochloride and 2-fluoroethyl betaine hydrochloride (that is, carbofluoroethoxy-methyl tri-methyl ammonium chloride). The flrst of these was readily prepared by the Fischer-Speier esteriflcation of glycine with fluoro-ethyl alcohol ... 

K is (. 16 for alkyiben .enesulfonates, about 0.10 for alkyl sulfate and fatty acid strdium soaps, 0,17 for i-alky ammonium salts at low pH, and 0.19 for quaternary H-atky I tri methyl ammonium salts, while k is found to be 0.16 for non ionic. systems. The coetfieicnl of the salinity effect for non ionic surfuciants is small, i.e.. O.l.l and 0.10 (in EON unit per wt9f salt in aqueous phase) respectively for sodium and calcium chloride. 

Vinylpyridine 4-Vinylbenzyl-tri methyl-ammonium chloride 4(5)-Vinylimid azole 1-Vinylim id azole 4-Vinylbenzamidine ... 

From the experimental results obtained three liquid-liquid systems have been selected to be included here aniline/water, ethylacetate/water and ethylacetoacetate/water. The selected surfactants are SDS (sodium dodecyl sulphate), which is anionic, DTAB (dodecyl tri-methyl ammonium bromide), which is cationic, and Atlas G1300 (polyoxyethylene triglyceride ester) which is non-ionic. 

In order to modify the surface features, the zeolites can be treated with long chain type surfactants, such as hexa-decyl-tri-methyl-ammonium chloride (HDTMA), stearyl-dimethyl-benzyl-ammonium chloride (SDMBA) and distearyl-dimethyl-ammonium chloride (DSDMA). As a result, they have been found to replace inorganic cations like Na" and Ca from the external surface of zeolites [8, 61]. Moreover, surface modification of synthetic zeolites A, X, Y and the natural zeolite, Clinoptilolite has been reported to occur by action of cationic surfactants (viz., HDTMA chloride, SDMBA chloride and DSDMA chloride) on the surface of the zeolites [8, 43, 62]. 

Quaternary ammonium compds., bis (hydrogenated tallow alkyl) dimethyl, methyl sulfates. See Quaternium-18 methosulfate Quaternary ammonium compds., bis(2-hydroxy-1-methylethyl)methyltallow alkyl. Me sulfates (salts). See Tallowalkylmethyl-bis (2-hydroxy-2-methyl-ethyl) quaternary ammonium methylsulfates Quaternary ammonium compds., C12-18-alkyltrimethyl, chlorides. See Alkyl tri-methyl ammonium chloride... 

A Nafion solution (Nafion 117, 1100 EW, 5% solution) was obtained from Aldrich Co. and was diluted with methanol. (Ferrocenylmethyl)tri-methyl ammonium (FA+) perchlorate was prepared from the iodide salt of FA (Tokyo Kasei Co.) by using an aqueous solution of NaC104, and was recrystallized three times from water. All drugs were obtained from commercial sources and used without further purification. The structures of these druges, including metabolic reactions of catecholamines, are shown in Figure 1. 

Dinitro-1,3,5-tri methyl benzene Di-(P-nitroxyethyl) ammonium nitrate a, a -Di-(nitroxyl) methylether... 

Azido-6-nitro l,4 benzoquinone-4-trimethyl-imide or Tri methyl-[3-axi do-5-nitro 4-hydroxy-phenylj-ammonium Hydroxide,... 

Figure 11. Inhibitors of GA biosynthesis AMO-1618 ( 2 -isopropyl-4 -(trimethyl-ammonium chloride)-5 -methylphenylpiperidine-l-carboxylate) and N,N,N-tri-methyl-l-methyl-(2f, , 6 -trimethylcyclohex-2 -en-l -yl)prop-2-enylammonium...

Formation of exomethylene compounds is also observed (as the major products, > 84%) when AOV-di methyl-AH (tri methyl silyljmethy I (2-furylmethyl)ammonium iodide and its 2-thienylmethyl analogue and their 3-furylmethyl and 3-thienylmethyl isomers are... 

HTFA trifluoro acetyl acetone TOMA Tri-n-octyl methyl ammonium... 

Tetra-methyl Ammonium Salts.— Not only do these tri-amines unite directly with the hydrogen halides forming ammonium salts as above, but, being much more strongly basic than the mono- or di-amines, they unite also with the alkyl halides themselves forming salts of similar character. Thus ... 

Betaine is the tetra-methyl ammonium inner salt compound already referred to (p. 386). It is really a tri-methyl derivative of glycine. 

Para-rosaniline Chloride.—This carbinol is known as para-rosaniline, carbinol base. It is not a dye but when treated with acids it yields salts which are colored and which possess the properties of dyes. These salts result from one of the amino groups reacting with the acid, forming an ammonium salt, the tri-valent nitrogen of the amine becoming penta-valent in the salt, as in the formation of methyl ammonium chloride from methyl amine. 

Choline is thus a quaternary ammonium hydroxide base, viz., tri-methyl hydroxy-ethyl ammonium hydroxide, as in the formula just given. The constitution of lecithin is therefore as follows ... 

Neurine, the third substance mentioned in this group, is a nitrogen base analogous to choline, being related to it as ethene is related to ethyl alcohol, i.e., neurine is tri-methyl vinyl ammonium hydroxide, as follows ... 

FIGURE 31.17 Schemes of the highly selective ligand for uranium recovery from seawater, (a) The hexacarboxylate Ugand (b) after reaction with tri-octyl methyl ammonium chloride. (Reproduced from Tabushi, I., Kobuke, Y., Nakayama, N., Aoki, T., and Yashizawa, A., Ind. Eng. Chem. Prod. Res. Dev., 23, 445, 1984. With permission.)... 

The group of Noyori developed an improved version, consisting of a W complex derived from Na2WO4 and aminomethylphosphonic acid with methyl-tri- -octyl ammonium hydrogen sulfate as PTR (WC /H2NCH2PO3H2/... 

The fact that less disorder is induced by the methyl(tris-octyl) ammonium cation has been interpreted in term of a very low charge/volume ratio for the cation with respect to the other ones studied Two final remarks can be presented ... 

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