• Proceedings of the Korean Society of Toxicology Conference
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• 2001.10a
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• pp.45-45
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• 2001

Heterocyclic aromatic amines (HCAs) are established genotoxic human cancer risks, that display their activity also in a number of animal models and in vitro. They are formed during the trying or broiling of creatinine-containing foods, mainly fish or meat. We established that mixing soy protein with ground meat blocks the formation of HCAs. we also observed that coating the surface of meat with polyphenols green or from black tea gives a dose - related reduction of the formation of HCAs.(omitted)

• Bulletin of the Korean Chemical Society
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• v.11 no.3
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• pp.224-227
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• 1990

The excitation mechanism of polycyclic aromatic amines (amino-PAHs) and polycyclic aromatic hydrocarbons(PAHs) for the chemiluminescence arising from the reaction between oxalate ester, bis(2,4,6-trichlorophenyl)oxalate (TCPO) or bis(2,4-dinitrophenyl)oxalate (DNPO) and hydrogen peroxide has been studied in terms of the excitation efficiencies to singlet excitation energies and the oxidative half-wave potentials. As a results of the study, the excitations of both amino-PAHs and PAHs appear to involve the charge transfer type of energy transfer. However the chemiluminescence efficiency corrected for fluorescence quantum yield of the amino-PAHs are varied more sensitively to the oxidative half-wave potential than that of PAHs possibly due to the large difference in solvation energy between the compounds and their ions.

• Journal of the Korean Chemical Society
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• v.45 no.1
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• pp.51-60
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• 2001

One-pot Mannich reaction of substituted hydroxy aromatic compounds with secondary amines in an aprotic solvent has been studied. The results demonstrate that the relative reactivity and regioselectivity of the Mannich reaction depend on the steric hindrance of amines as well as the nucleophilicity of hydroxy aromatic rings.

• Journal of the Korean Chemical Society
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• v.6 no.2
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• pp.148-154
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• 1962

The reactions between organic halides$(CCl_4,\;C_6H_5Br,\;C_6H_5Cl,\;C_6H_5I)$ and amines $(C_6H_5NH_2,\;R_2NH,\;R_3N,\;(CH_2)_5NH,\;pyridine)$ were studied under mixed u.v. irradiation. The modes of reactions were examined by means of gas chromatography and product-reactant ratio determination. The reaction of $CCl_4$ with amines give chloroform and hexachloroethanes, and the reaction of aromatic halides with amines gave biphenyl and benzene. In each series of reaction there obtained mainly corresponding amine hydrohalides, but no amination products. The reactivity was in the order of the basicity of amines and of the reactivity of organic hahides, except in the case of cyclic tertiary amine. The result was interpreted as a non-chain photodecomposition process. A competitive proton abstraction reaction path via the formation of a change transfer complex was proposed as the reaction mechanism.

• Bulletin of the Korean Chemical Society
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• v.33 no.9
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• pp.2851-2852
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• 2012

• Journal of the Korean Chemical Society
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• v.34 no.6
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• pp.652-657
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• 1990

Primary amines react with 1,6-hexanediol at 180$^{\circ}C$ for 5 h under argon atmosphere in the presence of both $RuCl_3{\cdot}3H_2$O and $PR_3$ to give N-substituted perhydroazepine derivatives in good yields. For aromatic amines such as anilines, $RuCl_3{\cdot}3H_2$O combined with $PPh_3$ showed the highest catalytic activity. On the other hand, in the reaction of aliphatic amines, $RuCl_3{\cdot}3H_2$O combined with $PBu_3$ showed the highest catalytic activity. These differences may be attributed to the difference in the basicity of these amines. Less basic aromatic amines may require less basic phosphines, while more basic aliphatic amines may require more basic phosphines as the ligands.

• Bulletin of the Korean Chemical Society
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• v.20 no.8
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• pp.973-976
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• 1999

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2001.10b
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• pp.45-45
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• 2001

• Applied Chemistry for Engineering
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• v.9 no.5
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• pp.661-666
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• 1998

Liquid phase adsorption equilibria of amines in an aqueous solution onto high silica zeolite pellets (HSZ), macroreticular resin particles (MR) and granular activated carbon (GAC) were determined using a batch bottle technique at 298K. The isotherm curves of HSZ-amines and GAC-amines indicate the nonlinear relationship of unfavorable adsorption type of HSZ-amines and favourable one of GAC-amines. However the curves of MR-amines represent the linear pattern of an adsorption isotherm. Among various equilibrium isotherms, the three parameters of the Redlich-Peterson equation and the two parameters of the Freundlich equation are found to be the most satisfactory within the range of this study. The two parameters of the Langmuir isotherm were not applicable to the present adsorption systems. The amines were adsorbed on the HSZ, MR and GAC in the following sequence of adsorptivity; aromatic amines > primary amines > secondary amines. The product of the Freundlich constants, k and n, proportionally increased with the boiling point, molar volume and dissociation constants of amines adsorbed on HSZ, MR and GAC.

• Journal of the Korean Chemical Society
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• v.11 no.2
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• pp.56-59
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• 1967

Mixtures of amines can be separated by elution chromatography on a chelating resin, Dowex A-1 loaded with nickel ions based on ligand exchange. Aqueous ammonia is used as the eluent. The method has proved particulary effective for separating aromatic amines.