Ammonium benzylates

Zur kathodischen Elektropolymerisation von quartaren Benzyl-ammonium-Salzen s. Lit.3. 

A chiral [4]pseudocatenane 16 was synthesized from chiral triptycene-based /m( crown ether) and three equivalents of hw[p-(but-3-enyloxy)benzyl]ammonium salt in CH2CI2 in the presence of Grubbs II catalyst, followed by reduction <06CEJ5603>. Several novel calix[4]arenocrowns were prepared by a simple one-pot reaction of calix[4]monohydroquinone diacetate with bw-tosylates, e.g. l,4-bw[2-(2-(2-(2-tosyloxy-ethoxy)ethoxy)ethoxy)ethoxy)benzene, in dry MeCN in the presence of NaOH the self-assembly into calix[4]areno[2]catenanes with a dicationic salt and />-bfr(bromomethyl)-benzene was also demonstrated <06TL6012>. 

EXPLOSIVELY UNSTABLE compounds [4, 6-9]. It has been reported that solid benzyltriethylammonium permanganate is considerably less stable than the tetra-butylammonium salt both compounds are sensitive to impact, but the benzyl-ammonium salt may explode violently at room temperature [4] and it is more readily handled by absorption on alumina [4]. 

The o-quinodimethane (40) may also be generated by fluoride-induced 1/4/elimination of trimethyl(2-[(trimethylsilyl)methyl]-benzyl) ammonium iodide (43). When this elimination is carried out at low temperature, the reaction conditions are ecjually compatible with the presence of 27, and this provides an additional route to 42. ... 

In acid catalysis (HCl), the variation in pH of the medium affects the yield of oligoorganylsilsesquioxanes to a lesser extent than in the case of alkaline catalysis. Base catalysts are used in the synthesis of oligosilsesquioxanes mainly in the thermolysis of the primary products of XSiYj hydrolysis (Table 1). The most efficient catalysts, in this case, are those which are readily decomposed upon heating to give inactive products For example, the use of tetraethylammonium 32,45) trimethyl-benzyl ammonium 23.37,41) triethylamine hydroxides has proved successful. 

With some stationary phases at low pH values (<4) benzyl amine as benzyl ammonium ion can be excluded by a Donnan potential from the pores, when positive charges are present at the surface. These could have stemmed from the manufacturing process or could have been introduced on purpose to shield amines from interacting with silanols. With an increasing pH, the Donnan exclusion decreases and at pH >5 benzyl amine is retarded increasingly. An example of this effect with a modern RP with low silanophilic properties is demonstrated in Figure 2.22, where the elution peaks of benzyl amine are presented as a function of pH. With these stationary phases, basic analytes cannot be separated at low pH values. 

Zur schonenden Debenzylierung cyclischer N-Benzyl-ammonium-Salze kann man diese auch mit Lithium-propanthiolat in Phosphorsaure-tris-[dimethylamid] (HMPT) bei 0° bis 20° umsetzen. So erhalt man z. B. aus l-Benzyl-5-ethyl-l-methyl-l,2,3,6-tetrahydro-pyri-dinium-bromid 5-Ethyl-1-methyl-1,2,3,6-tetrahydro-pyridin (70%) und aus N-Benzyl-ca-tharanthinium-bromid Catharanthin (90%) ... 

Other chemicals which inhibit milk lipase include hydrogen peroxide, animal cephalin, sodium arsenite, diisopropyl fluorophosphate, 2,4 din-itro-l-fluorobenzene, p-hydroxymercuribenzoate, potassium dichromate, lauryl dimethyl benzyl ammonium chloride, aureomycin, penicillin, streptomycin, and terramycin (Schwartz 1974). 

The Sommelet-Hauser rearrangement formally involves the conversion of a benzyl ammonium salt such as 76 into a benzyl amine (e.g., 79). 

Neumann and Miller (360) reported catalytic epoxidations with analogous P-W materials in a triphasic mode. The activity in the solvent-free system is influenced by the length of the hydrocarbon spacer between the silica and the ammonium group. Cyclooctene, for example, is epoxidized with only 10% conversion when a trimethyl propyl ammonium salt is used, whereas a conversion of 45% can be obtained in the presence of an immobilized octyldimethyl benzyl ammonium salt. The enhanced conversion is probably the result of a nearly ideal hydrophilic-lipophilic balance at the active site. 

FIGURE 11.27 Decomposition temperature as a function of MMT loading of PS nanocomposites. The MMT is modified with (filled square) dimethyl(hydrogenated tallow alkyl)benzyl ammonium ion, (filled circle) dimethyl di(hydrogenated tallow alkyl) ammonium ion, (filled triangle) dimethyl(hydrogenated tallow alkyl) 2-ethylhexyl ammonium ion, and (open square) NaMMT. (From Doh, J.G. and Cho, I., Polym. Bull., 41, 511, 1998. With permission.)... 

FD C Blue No. 1 is principally the disodium salt of ethyl[4- p-[ethyl(m-sulfobenzyl)amino]-a-(o-sulfophenyl)benzylidene]-2,5-cyclohexadien-l-ylidene](m-sulfobenzyl) ammonium hydroxide inner salt, with smaller amounts of the isomeric disodium salts of ethyl[4-[p-[ethyl(p-sulfobenzyl)amino]-a-(o-sulfophe-nyl)benzylidene] -2,5 -cyclohexadien-1 -ylidene] (p-s u I fo benzyl) ammonium hydroxide inner salt and cthyl 4- p- cthyKo-sul-fobenzyl)amino]-a-(o-sulfophenyl)benzylidene]-2,5-cyclohex-adien-l-ylidene](o-sulfobenzyl) ammonium hydroxide inner salt. 

SYNS ANTI-GERM 77 ANTISEPTOL BENZETHONIUM CHLORIDE BENZETONIUM CHLORIDE BENZTTX)IMETHYL-p-(l,1,3,3-TETRAMETHYLBUTYL)PHENOXYETHOXY-ETHYLAMMONIUM CHLORIDE BZT DIAPP DIISOBLfTYLPHENOXYETHOXYETHYLDIMETHYL BENZYL AMMONIUM CHLORIDE DISILYN HYAMINE HYAMINE 1622 NCI-C61494 p-tert-OCTYXPHENOXYETHOXYETHYLDIMETHYLBENZYL AMMONIUM CHLORIDE PHEMERIDE PHEMEROL CHLORIDE PHEMITHYN POLYMINE D QUATRACHLOR SOLAMINE... 

TCA500 CAS 139-08-2 HR 1 TETRADECYL DIMETHYL BENZYL-AMMONIUM CHLORIDE... 

FIGURE 10.2 Expanded infrared absorption spectra in the carboxylate region obtained for benzoic acid (long-dashed trace), the stoichiometric 1 1 benzylammonium benzoate salt (short-dashed), and the 1 1 cocrystal formed between benzoic acid and benzyl-ammonium benzoate (solid trace) [28]. 

Zirconium tungstate Anion eschannn strongly basic Pr ystyrene-ba Trimethyl benzyl ammonium (type Homogeneous, 8% CL G 1.15-125 - 5 0 >150 2-10 12 10... 

The asymmetrical tertiary amines are used exclusively as starting materials for the manufacture of quaternary ammonium compounds, cationic and amphoteric surfactants, and amine oxides. Quaternary ammonium compounds used as bactericides and algicides are produced by the reaction of tertiary amines with benzyl chloride, methyl chloride, or dimethyl sulfate. Of these, the benzyl ammonium chloride salt is the most widely used. 

Zirconium tungstate Anion exchangers strongly basic Pol yrene-based Trimethyl benzyl ammonium (type 1) Homogeneous, 6% CL G 115-1 25 -5 0 >150 2-10 1.2 1.0... 

Alkylbenzyldimethylammonium chloride alkyl dimethyl benzyl ammonium chloride BKC Hyamine 3S00 Pentonium Zephiran. 

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