Tetrabutyl ammonium chloride

FIG. 8 Potential oscillation at interface o/wl with SDS as surfactant with (A) no electrolyte, (B) with lOOmM NaCl, (C) lOOmM KCl, (D) lOOmM CsCl, (E) lOOmM MgClz, (F) lOOmM CaClj, (G) lOOmM BaClj, (H) lOOmM FeClj, (I) lOOmM NaF, (I) lOOmM NaBr, (K) lOOmM Nal, (L) lOOmM sodium acetate, (M) 100 mM sodium propionate, (N) 100 mM sodium -butyrate, (O) lOOmM sodium w-valerate, ( ) lOOmM tetramethylammonium chloride, (Q) 20mM tetra-ethylammonium chloride, (R) 20 mM tetrapropylammonium chloride, and (S) 20 mM tetrabutyl-ammonium chloride in phase wl. Phase w2 contains 8mM SDS and 5M ethanol and phase o contains 5mM tetrbutylammonium chloride. (Ref. 27.)... 

Sonawane et al. [90] investigated the affect of ultrasound and nanoclay for the adsorption of phenol. Three types of nanoclay tetrabutyl ammonium chloride (TBAC), N-acetyl-N,N,N trimethyl ammonium bromide (CTAB) and hexadecyl trimethyl ammonium chloride (HDTMA), modified under sonication, were synthesized which showed healthier adsorption of phenol within only 10 min in waste water. The interlamellar spacing of all the three clay increased due to incorporation of long chain quaternary salts under cavitational effect. 

Problem 7.30 Write equations for and explain the use of tetrabutyl ammonium chloride, BUjN Cl, to facilitate the reaction between 1-heptyl chloride and cyanide ion. 

The t-butyldimethylsilyl ether (TMBS-ether), formed from the alcohol with t-butyldimethylsilyl chloride in the presence of imidazole in dimethylformamide solution,84 is more stable to hydrolysis than the TMS-ether (see also Section 4.2.66, p. 461). Deprotection is readily effected by treatment with 2-3 equivalents of tetrabutylammonium fluoride in tetrahydrofuran at 25 °C,84a or tetrabutyl-ammonium chloride and potassium fluoride dihydrate in acetonitrile.84b... 

TEMPO = 2,2,6,6-tetramethylpiperidine-1-oxyl TBACI = tetrabutyl ammonium chloride NCS = A/-chlorosuccinimide... 

Tetrabutyl ammonium chloride, 128 Tetraethyl lead, 65 Tetrahydrofuran [THF], 95, 285, 449 Tetralin, 200... 

Chloride initiation of chloral polymerization could be readily achieved with tetraalkyl ammonium chlorides, such as tetrabutyl ammonium chloride, or with trialkyl sulphonium chlorides as initiators. Chloral polymerization initiated with R4NCI behaved very similarly to that with tertiary amine initiation. It is likely that the actual initiator of chloral polymerization with tertiary amines was chloride ion, which was presumably formed by chloride abstraction from chloral by the amine. The ease of chloride exchange in chloral reactions was demonstrated by initiation studies with Cl as initiator. 

As shown in the next scheme, palladium-catalyzed coupling of iodoaniline with bis-triethylsilyl protected butynol in the presence of Na2C03 provided a mixture of indoles. This mixture was desilylated with aqueous HCl in MeOH to furnish the tryptophol in two steps. Protection of the alkyne prevented coupling at the terminal carbon of the alkyne and triethylsilyl (TES) was found to be optimal because it offered the correct balance between reactivity (rate of coupling) and stability. Notably, this palladium-catalyzed process does not require the use of triphenyl phospine, tetrabutyl ammonium chloride, or lithium chloride. The alcohol was converted into the mesylate and then treated directly with 40% dimethylamine to afford rizatriptan, which was purified via recrystallization after forming the benzoate salt. 

TBACl tetrabutyl ammonium chloride manufactured by Aldrich TBACI-S tetrabutyl ammonium chloride manufactured by Sachem MTBCl methyltributyl ammonium chloride manufactured by Sachem TMCl tetramethyl ammonium chloride manufactured by Sachem ° TBABr tetrabut ammonium bromide manufactured by Sachem... 

Butanaminium, 4-methoxy-N,N,N-trimethyl-4-OXO-, chloride. See Carpronium chloride 1-Butanaminium, N,N,N-tributyl-, bromide. See Tetrabutyl ammonium bromide 1-Butanaminium, N,N,N-tributyl-, chloride. See Tetrabutyl ammonium chloride 1-Butanaminium, N,N,N-tributyl-, hydroxide. 

Tetra-n-butyl ammonium chloride. See Tetrabutyl ammonium chloride Tetrabutyl ammonium fluoride CAS 429-41-4 87749-50-6 (trihydrate) EINECS/ELINCS 207-057-2 Synonyms TBAF Tetra-n-butyl ammonium fluoride... 

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... 

Teixidor et al. [49] synthesized self-doped polypyrrole by using the nonconventional covalently bound low charge density anion [3,3 -Co(1,2-C2B9Hio)2] to a pyrrole unit via a spacer diether aliphatic chain. The electropolymerization of the potassium salt of the monomer, denoted as [1] , (Figure 5.7) was obtained in dry acetonitrile with tetrabutyl ammonium chloride in the potential range of —0.5 to 1.7V vs Ag/AgCl. Similarly a copolymer of [1] was prepared with pyrrole monomer (ratio 1 1) under identical conditions. The conductivity of poly[l] and copolymer films measured using a four-point probe... 

Alkylation of Reactive Methylene Compounds Efficient and rapid alkylation of compounds containing reactive methylene group (e.g., ethylacetoacetate) can be achieved in a microwave oven using tetrabutyl ammonium chloride (TBAC) as PTC without solvent (Scheme 18). 

With a more powerful nucleophile such as potassium thioacetate, the reaction is much easier proceeding even with a dilute aqueous solution of the nucleophile under phase transfer conditions. Best results are obtained under solid-liquid phase transfer catalysis with essentially complete conversion obtained with both tetrabutyl ammonium chloride and 18-crown-6. A critical evaluation of this and further data reported by Nishikubo and coworkers (Ref. 19, 20) leads to the following general conclusions ... 

The reaction can be done either in a solid-liquid-solid system, with a suspension of finely powdered base in an organic solvent containing tetrabutyl ammonium chloride or 18-crown-6, or in a liquid-solid-liquid system with a concentrated aqueous solution of... 

Okawara and coworkers (Ref. 10) first attempted to use phase transfer catalysis to modify a finely dispersed poly(vinyl chloride) powder in aqueous medium using nucleophiles such as azide, dithiocarbamate, or thiophenoxide ions in the presence of tetrabutyl ammonium salts. While a maximum conversion of 10% was obtained with the first two nucleophiles, thiophenoxide afforded a 30% conversion. Although the authors indicate that the reaction took place only at the surface of the polymer particles, the fairly high conversion obtained with thiophenoxide might suggest otherwise. A second report from the same laboratory (Ref. 11) focuses on reactions of poly(vinyl chloride) solutions with sodium azide in the presence of various catalysts. As expected, the reaction is strongly catalyzed by cationic surfactants such as dimethyl distearyl ammonium chloride or tetrabutyl ammonium chloride which both afford essentially complete conversion to the azido polymer. In contrast, tetrabutyl ammonium iodide is totally ineffective. 

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