N-Hexylamine

Phenyl-3-oxopropanoic acid (25 mmol) and EtjN (87.5 mmol) were dissolved in THF (150 ml) and cooled to —40°C. Ethyl chloroformate (27.5 mmol) was added dropwise to this solution and then the reaction mixture was stirred for 30 min at —20°C. Di-n-hexylamine (27.5 mmol) was added to the suspension and it was stirred at room temperature for an additional hour. The reaction mixture was diluted with water (100 ml) and extracted with ether (400 ml). The extract was washed with aq. 5% HCl (100 ml) and brine (2 X 100 ml) and dried over NajSO. The crude amide was obtained by removal of the solvent in vacuo and phenylhydrazine (25 mmol) was added. The mixture was heated to 100°C for 30 min. The residue was held in vacuo to remove the water formed and then powdered ZnCl2 (125 mmol) was added. The mixture was heated at 170"C with manual stirring for 5 min. The cooled residue was dissolved in acetone (100 ml) and diluted with ether (500 ml). Water (100 ml) was added. The organic layer was separated and washed successively with 5% aq. HCl (100 ml) and brine (2 x 100 ml) and dried over NajSO. The solvent was removed in vacuo, and the residue was recrystallized from EtOAc-hexane. The yield was 79%. 

Diamines formed upon photolysis of 6-quinolyl azide in isopropyl-, n-butyl-, and n-hexylamines are very unstable, so they were cyclized to the corresponding 1-substituted imidazo[4,5-/]quinolines by heating the residue obtained after evaporation of the photolysis solvent with formic acid at reflux (82JCS(P 1)421). Instead... 

Methylamine Ethylamine n-Propylamine Mo-Propylamine n-Butylamine. iso-Butylamiiie ec. -B utylamiiie n-Amylamine. i o-Amylamino n-Hexylamine. n-Heptylamine... 

The Buchwald-Hartwig amination reaction has gained great interest in the last decade in both academic and industrial environments. In the work presented herein, we discuss a very interesting effect in the competitive reaction of two amines (benzophenone hydrazone and n-hexylamine) with 3-bromobenzotrifluoride. 

We studied the competitive amination of two amines (benzophenone hydrazone and -hexylamine) and one aryl halide (3-bromobenzotrifluoride), catalyzed by Pd(BlNAP). We showed that, when reacting alone at the same conditions, n-hexylamine is considerably more reactive and shows positive order kinetics benzophenone hydrazone shows zero order kinetics and forms a very stable intermediate, the BlNAP(Pd)Ar(amine) we also observed by NMR. During the competitive reaction of the two amines, the benzophenone hydrazone reacts first and only when it is completely consumed, the hexylamine starts to react. In this case it is the stability of the major intermediate, and not the relative reactivity, which dictates the selectivity. 

Well head pressures increased when injection was stopped at Well No. 1 for more than 24 h, apparently caused by a combination of precipitation reactions and backflow of sand. Injecting a slug of brine after every period of interrupted flow solved this problem. Movement of the main organic constituents (n-hexylamine, butanal, butanol, and phenol) was assumed to be slowed by adsorption. This conclusion was based on laboratory adsorption experiments by involving a different geologic formation (Cottage Grove sandstone) no direct observations were made of the injected waste. For current hazardous waste injection wells in Texas, the reader can refer to Texas Environmental Profiles web site for on-line resources for the State of Texas.185... 

DIISOPROPYLAMINE DI-n-PROPYLAMINE n-HEXYLAMINE TRIETHYLAMINE 6-AMINOHEXANOL DIISOPROPANOLAMINE TRIETHANOLAMINE N-AMINOETHYL PIPERAZINE TRIETHYL PHOSPHATE HEXAMETHYLENEDIAMINE HEXAMETHYL PHOSPHORAHIDE TRIETHYLENE TETRAMINE HEXAMETHYLDISILOXANE... 

Sihcon-supported OXONE reagent oxidizes n-hexylamine into the corresponding hydroxy lamine in good yield. ... 

Problem 18.60 Synthesize the following compounds from alcohols of four or fewer C s, cyclohexanol and any needed solvents and inorganic reagents, (a) n-hexylamine, (h) triethylamine N-oxide, (c) 4-(N-methylamino)heptane, (d) cyclohexyldimethylamine, (e) cyclopentylamine, (/) 6-aminohexanoic acid. 

Copolymers of methacrylic add and ethylene termed as ethylene ionomers have been used as the base polymer for binding alkali, alkaline earth and transition metal ions. Organic amines such as n-hexylamine, hexamethylene tetraamine, 2,2,6,6-tetramethyM-hydroxy piperazine, ethylene diamine and polymeric diamines such as silicone diamine, polyether diamine and polymeric diamines such as silicone diamine, polyether diamine and polyamide oligomers considerably enhance the complex formation characteristics of Zn(II) ethylene ionomers thereby enhancing the physico-chemical properties [13]. 

Figure 15. Open tubular liquid chromatography of amine-NBD derivatives using on-column fluorescence detection. Peaks correspond from left to right to ethylamine, n-propylamine, n-butylamine, cyclohexylamine, and n-hexylamine. Conditions 20-p.m X 8.3-m column with C-18 bonded phase 20% acetonitrile and 80% water (v/v) mobile phase at a linear velocity of 0.50 cm/s on-column injection of 5 nL. (Reproduced from reference 59. Copyright 1984 American Chemical Society.)...

Fig. 6. The polymerization of y-benzyl-L-ghitamate NCA in dioxane at 25° C, initiated by n-bexyl-amine. The values of [NCA] initially and at time t are denoted by A0 and At respectively, 1 is the initial concentration of n-hexylamine. kz a, kt i are the apparent propagation coefficients, in mole-11 secrK [Reprinted from paper by R. D. Lundberg and P. Doty J. Am. Chem. Soc. 79 3961 (1957)]...

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