Triethylbenzyl ammonium chloride

To a stirred solution of the alkynylsilane (20 mmol) and triethylbenzyl-ammonium chloride (0.7 mmol) in MeCN (15 ml) cooled to 0°C was added aqueous sodium hydroxide (15 ml, 12m). After 5-10min, the mixture was diluted with ether and extracted with ether/dichloromethane. Drying, concentration and suitable purification gave the free alkyne (80-90%). 

Ye et al. reported that the reduction of 2,4-dichlorophenyl-2-chloroethanone 1 with potassium borohydride in dimethylformamide to give 90% a-chloromethyl-2,4-dichlorobenzyl alcohol 2. Alkylation of imidazole with compound 2 in dimethyl formamide in the presence of sodium hydroxide and triethylbenzyl ammonium chloride, gave l-(2,4-dichlorophenyl-2-imidazolyl)ethanol 3 and etherification of 3 with 2,4-dichlorobenzyl chloride under the same condition, 62% yield of miconazole [9]. 

Trinitrobenzyl chloride, Triethylbenzyl ammonium chloride, Methylene chloride. Sodium hydroxide. Methanol... 

Glyoxal, Benzylamine, Formic acid. Acetonitrile, Acetic anhydride. Palladium on charcoal, Bromobenezene, Chloroform, Sulfolane, Nitrosonium tetrafluoroborate. Ethyl acetate Triethylbenzyl ammonium chloride. Methylene chloride. Sodium hydroxide. Methanol... 

Oxidation of 2,3-dihydrobenzodiazepines by various oxidants (H202, Se02, peracids, etc.) normally gives resinous reaction products which cannot be easily identified. However, described in [107] is the oxidation of 7V-bezoyl derivatives of benzodiazepines 97 by meta-chloroperbenzoic acid in the presence of sodium bicarbonate and triethylbenzyl ammonium chloride (used as an interphase catalyst) which yields compounds 98 (Scheme 4.32). 

Likewise, 1,3-hexanediones react with salicylaldehydes in the presence of a catalytic amount of triethylbenzyl-ammonium chloride (TEBA) to afford cyclohexanone fused 4/f-chromenes in excellent yield (Equation 55) <2005SC97>. 

Summary HNS is prepared by treating the high explosive, trinitrobenzyl chloride, with sodium hydroxide in the presence of triethylbenzyl ammonium chloride. Commercial Industrial note For related, or similar information, see Application No. 966,674, December 5, 1978, by The United Sates Navy, to Isaac Angres, Gaithersburg, MD. Part or parts of this laboratory process may be protected by international, and/or commercial/industrial processes. Before using this process to legally manufacture the mentioned explosive, with intent to sell, consult any protected commercial or industrial processes related to, similar to, or additional to, the process discussed in this procedure. This process may be used to legally prepare the mentioned explosive for laboratory, educational, or research purposes. 

Diphenyl Tellurium Diacetate 2.8 g (10 mmol) of diphenyl tellurium are dissolved in 20 ml of chloroform and 1.5 g (25 mmol) of glacial acetic acid and 5 mg of triethylbenzyl ammonium chloride are added. 1.7 w/of 25 % hydrogen peroxide are then added dropwise to the stirred mixture. The organic layer is separated, dried, the chloroform is evaporated, and the residue is washed with a mixture of hexane and diethyl ether yield 3.6 g (90%) m.p. 138°. 

The undesired epimer was obtained in 4 % yield via an alternative mechanism with retention of the configuration. In this case, the reaction worked only with the equimolar addition of triethylbenzyl ammonium chloride (TEBAC). This reagent was employed to reduce the amount of undesired diene elimination product to 30 % compared to 80 % under standard conditions. 

Change of surface tension of an aqueous 0.2 mol/1 Triethylbenzyl ammonium chloride solution in dependence of the number of purification cycles j (according to Lunkenheimer Miller 1988)... 

Different amounts of triethylbenzyl ammonium chloride were added to PHBV solutions in order to prepare polymer solutions with different surface tension and same conductivity. It was noted that change in the surface tension has an impact on bead formation (Zuo et al. 2005). It was also observed that there is no an obvious... 

---