Di-s-butylamine

Dibutylamine. See Diisobutylamine n-Dibutylamine Di-n-butylamine. See Dibutylamine Di-s-butylamine... 

Cumene sulfonic acid Di-s-butylamine Di (2-ethylhexyl) amine Hydrobromic acid Isononylamine... 

Dimethyl maleate Sipomer DMM 210-852-7 Amyl propionate Ucar n-Pentyl Propionate 210-871-0 Methyl disulfide 210-930-0 Diethyl DL-malate 210-937-9 Di-s-butylamine 210-953-6... 

Beller s palladacycle (12) catalyzes the arylation of N-methylaniline and di-n-butylamine with an activated aryl chloride, Eq. (48) [70]. As was observed in the reactions of cyclic amines, significant amounts of the regioisomeric product was formed, indicative of reaction through a benzyne intermediate. 

Upon increasing the reaction temperature from 220 to 240 °C, both the conversion of i-BuOH and the yield of i-Bu2NH significantly increased from 86.6 % and 65.0 %,respectively, and the yield of the secondary amine reached 71.4 % at 91.5 % conversion (compare exp.s N°2 and N°5 in Table 2). It is noteworthy, that upon increasing the NH3/i-BuOH molar ratio at constant WHSV values (1.0 and 1.6 h ) both the selectivity and the yield of di-i-butylamine reached a maximum at... 

Dimethyl benzoylphosphonate added slowly with rapid stirring and cooling at 0 to a soln. of hydrogen dimethyl phosphite and di-n-butylamine in ether, then allowed to warm to room temp. tetramethyl phenylmethanehydroxydiphospho-nate. Y 96%. F. e. s. D. A. Nidiolson and H. Vaughn, J. Org. Chem. 36, 3843 (1971). 

Unsym. subst. melamines can be prepared from cyanuric chloride by successive reaction with 3 different amines. The procedure is quite general. The intermediate monoamino derivatives are not isolated. The diamino derivatives, however, are insoluble in the reaction medium. They are isolated and, without purification, treated with the third amine in a different solvent system.— E 1 mole of di-n-propylamine followed by 1 mole of aq. NaOH added below 5° to a slurry of cyanuric chloride in water-acetone, stirred 1 hr. at 0°, then 1 mole of di-n-butylamine added followed by 1 mole of aq. NaOH without cooling, and kept 5-6 hrs. at 45-50 crude 2-di-n-propylamino-4-di-n-butyl-amino-6-chloro-s-triazine (Y ca. 100%) mixed with n-butanol, heated, 1 mole of dihexylamine added at 55-60° and 1 mole of aq. NaOH at 90-95° at such a rate that the mixture remains just alkaline to phenolphthalein, heating continued 3-4 hrs. at 90-95° -> N2-di-n-propyl-N -di-n-butyl-N -dihexylmelamine (Y 99%). F. e. s. J. R. Campbell and R. E. Hatton, J. Org. Chem. 26, 2786 (1961) 2-chloro-4,6-diamino-s-triazines s. N. N. Mel nikov et al., Khim. Prom. 1961, 703 C. A. 58, 526b. 

Pippette 25 cm 0.2 M di-n-butylamine solution into two dry stoppered 250 cm conical flasks (i.e., a sample and a blank flask). Allow a 15 s pipette draining time during these operations. Into one of the flasks pipette 25 cm of the ten-fold diluted phenyl isocyanate solution (sampled at 25 °C using a 15 s draining time) and into the blank flask pipette 25 cm of toluene. Leave both solutions for 15 minutes to react, then add to each 100 cm methanol and 5 drops bromophenol blue indicator. Using 0.1 M hydrochloric acid titrate the sample (Tj ml of normal hydrochloric acid) and the blank solutions (Tg ml of normal hydrochloric acid) to the yellow-green end point. 

Pipette 10 ml of 0.2 N di- -butylamine solution into each of twelve dry 100 cm conical flasks and quickly replace the stoppers (15 s pipette draining time). Ensure that the same amount of di-n-butylamine is introduced into each flask... 

An exception to the lone pair or donor electron requirement of organic inhibitors is provided by the quaternary ammonium compounds. Meakins reports the effectiveness of tetra-alkyl ammonium bromides with the alkyl group having C 10. Comparative laboratory tests of commercial inhibitors of this type have been described . The inhibiting action of tetra-butyl ammonium sulphate for iron in H S-saturated sulphuric acid has been described, better results being achieved than with mono-, di- or tri-butylamines . 

The anion of di-isopropyl phosphorothiolothionic acid (26) reduces hydroxyl radicals, and the radical (27) so produced is detectable by e.s.r.33 Attempts to observe these radicals by photolysis of the free acid were unsuccessful. However, the use of a spin trap (e.g. TV-methylene-t-butylamine iV-oxide) enabled radicals in this system and other closely related systems [e.g. with (28)] to be observed by e.s.r. spectroscopy. 

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