• Rapid Communication in Photoscience
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• v.2 no.2
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• pp.39-41
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• 2013

It is interesting to introduce viologen moiety into photoactive compounds such as porphyrin and anthracene in the study of supramolecular system such as pseudorotaxanes. For the construction of photoactive pseudorotaxane based on porphyrin-viologen-anthracene triad or its zinc derivative threaded with bis-p-phenylene-34-crown-10 macrocycle, porphyrin-viologen-anthracene triad 1 and its zinc derivative zinc porphyrin-viologen-anthracene triad 2 were prepared and their absorption and fluorescence spectral properties were measured.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.890-892
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• 2007

We report the syntheses and characterizations of a novel TTF derivative. To extend the mesogenic core, alkoxy naphthalenic group and short alkyl chains were introduced on either side of TTF unit, which results in asymmetric planar structure. TTF molecule is expected to show many interesting properties.

• Bulletin of the Korean Chemical Society
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• v.24 no.10
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• pp.1538-1540
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• 2003

• Archives of Pharmacal Research
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• v.16 no.2
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• pp.168-174
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• 1993

The michael adducts 2a, b were obtained from the reaction of the phenylacelyl derivative 1 with benzadehyde and p-anisaldehyde and p-anisaldehyde respectively. 2a and 2b were subjected to react with cyanoethanoic acid hydrazide, malononitrile, cyanothioacetamide, cyanoacetamide and 1, 1, 3-tricyano-2-amino propene to yield 4a-h and 5a, b respecitively. Hydrogen peroxide oxidation of 2a, b gave the aurone derivative 6a, b. The pyone derivatives 8a, b were obtained from 2a, b by addition of chioroacetyl chioride followed by dehydrochlorination.

• Journal of the Korean Chemical Society
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• v.29 no.5
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• pp.561-562
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• 1985

• Bulletin of the Korean Chemical Society
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• v.25 no.11
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• pp.1613-1614
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• 2004

• Bulletin of the Korean Chemical Society
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• v.22 no.10
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• pp.1163-1166
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• 2001

• Bulletin of the Korean Chemical Society
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• v.22 no.11
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• pp.1181-1182
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• 2001

• Journal of the Korean Chemical Society
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• v.54 no.4
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• pp.447-450
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• 2010

In this study, the improved large-scale synthetic route for epinastine hydrochloride, the second-generation antihistamine, was developed. The original synthetic route involves the synthesis of an aminomethyl derivative, the main intermediate, and in this process hazardous materials such as very toxic phosgene and sodium cyanide along with the explosive and expensive aluminum chloride and lithium aluminum hydride were used. In order to improve the synthetic route, we developed industrially very useful process to prepare the aminomethyl intermediate by the synthesis of the phthalimidomethyl derivative first and easy removal of the phthalyl group using hydrochloric acid or methyl hydrazine, and hazardous materials and expensive reagents were excluded in this process.

• Bulletin of the Korean Chemical Society
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• v.34 no.1
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• pp.159-163
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• 2013

A new Rhodamine B hydrazide hydrazone 1 has been synthesized and investigated as a colorimetric and fluorescent "off-on" sensor for the recognition of $Cu^{2+}$ in $CH_3CN/H_2O$ (1:1, v/v, HEPES 10 mM, pH = 7.0) solution. Sensor 1 displayed highly selective, sensitive and rapid recognition behavior toward $Cu^{2+}$ among a range of biologically and environmentally important metal ions. Sensor 1 bind $Cu^{2+}$ via a 1:1 stoichiometry with an association constant of $1.92{\times}10^6\;M^{-1}$, and the detection limit is evaluated to be $7.96{\times}10^{-8}\;M$. The $Cu^{2+}$ recognition event is reversible and is barely interfered by other coexisting metal ions.