Ethyl triethylammonium

The enol silyl ether (56) undergoes a photoinduced reaction in the presence of chloranil to give cyclohexenone and the adduct (57) and the currently available evidence suggests that the reaction proceeds by electron transfer to the photo-activated chloranil to give (56) A photophysical study has appeared of the chromophore-quencher compounds [Au(CCPh)(L )] (L = 10-[(diphenylphosphi-no)methyl]anthracene) and [Au(CCPh)(L )]BPh4 (L = l-[2-(diphenylphosphin-oxy)ethyl]pyridinium], 1 -[2-(diphenylphosphinoxy)ethyl]-4-methyl pyridinium, 1 -[2-(diphenylphosphinoxy)ethyl]-4-tert-butylpyridinium, and 1 -[2-(diphenylpho-sphinoxy)ethyl]triethylammonium in which the Au(CCPh) chromophore is linked by a flexible tether to the acceptors. 

Silylation of ethyl 2-nitropropionate 1105 to the N,N-bis(silyloxy)enamine 1106 followed by addition of triethylamine affords the triethylammonium bromide 1107 in 45% yield [135]. Migration of the trimethylsilyloxy group in 1108 gives 68% 1109 and, after transsilylation with methanol, 71% of the free 2-hydroxycyclohexa-none-oxime 1110 [135] (Scheme 7.46)... 

O-Ethyl S-2-(Triethylammonium)ethyl Methylphosphonothiolate Iodide O-Ethyl S-2-(Trimethylammonium)ethyl Ethylphosphonothiolate Iodide O-Ethyl S-Ethyl Methylphosphonothioate... 

According to the latter approach, reducing sugars 128 were reacted with triethylammonium dimethyl boranophosphate in the presence of bis(2-oxo-3-oxazolidinyl)phosphinic chloride as condensing reagent, 3-nitro- 1,2,4-triazole as nucleophilic catalyst and A,A-diisopropyl-A-ethyl-amine to provide boranophosphate triester derivatives 129 as anomeric... 

Transalkylation reactions are observed in Y zeolites partially exchanged with ethyl-, diethyl-, and triethylammonium cations (EA, DEA, and TEA, respectively) heated above 150° C in air or under vacuum, in the presence of residual water molecules. The main reactions may be depicted schematically as follows (EA) Y — (DEA)Y > (NHt+)Y, (DEA)Y - (EA)Y > (TEA)Y, and (TEA)Y - (DEA)Y > (EA)Y, iAc main constituent in the gas phase being CJh. They are similar to those observed in montmorillonite in the presence of a water vapor pressure of a few torr. It is proposed that in both cases the transalkylation processes are acid catalyzed, the residual water molecules and the surface oxygen being the active spots recycling the protons in montmorillonite and zeolite, respectively. 

The experimental procedures are those used previously (1). The following saturations were obtained 255.2 X 10 3 equivalent of ethyl-ammonium (EA), 141 X 10 3 equivalent of diethylammonium (DEA), and 65.5 X 10 3 equivalent of triethylammonium (TEA) per 100 grams of Y zeolite equilibrated at a relative humidity of 32%. Thus there is still an appreciable fraction of the lattice negative sites balanced by Na+ cations (6). The crystalline character of the zeolite lattice is not affected during these experiments. 

Ethyl oxalyl chloride (0.24 mL, 2.1 mmol) was added to a chilled (—30 °C) mixture of the hydrazide 58 (0.407 g, 2.0 mmol) and TEA (0.29 mL, 2.1 mmol) in THF. The soln was gradually allowed to warm to rt and stirred for 3h. The triethylammonium hydrochloride was filtered off, and the filtrate was concentrated. The residue was partitioned between Et20 and H20. The organic layer was extracted with sat. aq NaHC03 and 1M NaHS03, dried (MgS04), filtered, and concentrated. The crude product 59 was used in the next step without further purification. 

Z-Lys(Boc)-NH-(CH2)4-NH-Boc 7.0 g (31 mmols) of Boc-NH-(CH2)4-NH2-HCI and 4.2 ml (30 mmols) of triethylamine in 100 ml of dimethylformamide are stirred for 20 hours together with 16.8 g (30 mmols) of Z-Lys(Boc) OTCP. The product is filtered off the triethylammonium chloride and the filtrate is evaporated to dryness in vacuo. The residue is dissolved in ethyl acetate, thoroughly shaken at 0°C with 2 N citric acid, 1 N bicarbonate and H20 and dried over sodium sulfate. After distilling off the solvents, the residue is recrystallized two times from isopropanol/ether. Yield 14.1 g (83%), M.P. 83°-85°C. 

To a 10-mL round-bottomed flask fitted with a nitrogen balloon was added sulfide catalyst (0.2 equiv), anhydrous dioxane (4.0 mL), rhodium(II) acetate dimer (2 mg, 0.01 equiv), substrate (0.5 mmol), benzyl triethylammonium chloride (23 mg, 0.2 equiv), and tosylhydrazone sodium salt (1.5 equiv). The reaction mixture was stirred vigorously at 40 °C for 48 h. Work-up consisted of the sequential addition to the reaction mixture of water (5 mL) and ethyl acetate (5 mL). The aqueous layer was washed with ethyl acetate (2.5 mL) and the combined organic phases dried (MgSC ), filtered, and concentrated in vacuo. The crude products were analyzed by aH NMR to determine the diastereomeric ratio, and then purified by FC to afford the corresponding cyclopropane. 

Enantiometric mixtures of nimodipine were separated on (3-cyclodextrin-bonded silica gel plates. The plates were developed with light petroleum/ ethyl acetate/methanol, methanol/1% triethylammonium acetate (pH 4.1), or methanol/acetonitrile/1% triethylammonium acetate as mobile phases. Spots were identified by illumination at 365 nm, or by exposure to iodine vapor [11]. 

S-(a,a-bis-f4-ehlor-phenylJ-methyIester)-0,0-di-cthylester XII/2, 700 -bis-[dialkoxycarbonyl-amid] E2, 774 -S-(2,5-dibrom-3-thienylmethylester)-0-ethyl-ester-S-propylester E2, 623 -bis-[diethylamid] El, 774 -bis-[diethylamid]-chlorid E2, 774 -bis-[diethyIamid]-Triethylammonium-Salz E2, 768... 

One mole of acetyl chloride is added to a liter of triethylamine, resulting in a vigorous exothermic reaction. Once the reaction mixture has cooled, 1 mole of ethanol is added. Another vigorous exothermic reaction results. The mixture is analyzed and found to contain triethylamine, ethyl acetate, and triethylammonium chloride. Propose mechanisms for the two exothermic reactions. 

If the amino component is used as a salt such as the hydrochloride, it has to be liberated by means of an auxiliary base which is known to further enhance the rates of racenoization.t l With bulky tertiary amines such as ethyldiisopropylanoine, W-ethylpiperidine, or W-ethyl-morpholine rather than triethylamine, this problem is partly circumvented (see Section 7.3),PI however it is advisable to avoid the use of bases whenever possible by isolating the free anoino component prior to the coupling step. Moreover, detailed investigations clearly revealed that racemization is favored at higher temperatures (rt) when the reaction is carried out in polar solvents like DMF,P l or when the polarity of the solvent is further enhanced by the presence of salts such as LiBr or triethylammonium chloride.P ... 

The residue then was dissolved in 30 ml of 0.04 M aqueous triethyl-ammonium bicarbonate buffer (pH 7.5), (resulting pH 5.6). It was chromatographed on a DEAE cellulose column (HCOJ form) (3.4 X 15.0 cm), with elution first with 500 ml of water and then with a linear gradient of trimethylammonium bicarbonate at pH 7.2 (0-0.07 M). XXVII was completely resolved from some of XXVIII which was formed under the above reaction conditions. However, it was still contaminated by small amounts of cAMP and ethyl 2-diazo-malonic acid. These impurities were apparently generated from the hydrolysis of some XXVII when the triethylammonium bicarbonate was removed. Pure samples of XXVII were obtained by preparative paper chromatography on either Whatman 40 or 3 MM paper with overnight development with ethanol 0.5 M ammonium acetate, pH 7.0 (5 2, v/v). 

Ethyl(carboxysulfamoyl)triethylammonium hydroxide, Burgess reagent. 

Phase transfer reaction of the conjugate base of the JV,iV,iV -trialkylsulphamides (345) in the presence of benzyl triethylammonium chloride with chloromethyl ethyl ether or chloromethyl alkylthioethers yields the N,iV-dialkyl-iV -alkyl-iV -ether and thioether sulphamides (341)365 (equation 117). 

The utility of the 2-diethylaminoethyl ethers of insoluble polysaccharides is well established in the field of ion-exchange chromatography, and so such compounds as 0-( 2-diethylaminoethyl) cellulose and 0-(2-diethylaminoethyl) cross-linked dextran (DEAE-Sephadex) are common laboratory reagents for fractionations. The preparation, properties, and uses of 0-(2-diethylaminoethyl)-, 0-[2-(triethylammonium)-ethyl]-, and 0-(2-aminoethyl)-cellulose have been reviewed. Modification of the reaction conditions originally employed for diaminoethylation... 

Patman (6-palmitoyl-2-[[2-(triethylammonium)ethyl]methylamino]-naphthalene chloride) 116, 117, 122... 

Synthesis of bromide of monobutyl ether of oligo(ethyleneoxide)[226] The monohutyl ether of oligoethyleneoxide 5000 (50 g, 0.01 mol) and dry triethylamine (0.93 mL, 0.01 mol) were dissolved in dry toluene (200 mL). Thionyl bromide (2.3 mL, 0.03 mol) was added dropwise with stirring. The mixture stirred under reflux for 4 h. Triethylammonium bromide was removed by filtration, and the filtrate was evaporated. The crude product was dissolved in methylene chloride (40 mL) and added to cold anhydrous ethyl ether (150 mL). The product was collect by filtration. 

A soln. of ethyl (carboxysulfamoyl)triethylammonium hydroxide inner salt in benzene allowed to react exothermally with aniline N-carbethoxy-N -phenyl-sulfamide. Y 92%. F. e. s. G.M. Atkins, Jr., and E. M. Burgess, Am. Soc. 90, 4744 (1968). 

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