• 한국동물학회지
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• 제30권2호
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• pp.99-106
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• 1987

It is the purpose to investigate the physiological toxity and mutagenicity by heavy metal compounds such as potasium dichromate, sodium arsenite and selenium dioxide on the development of Drosophila melanogaster. These chemical compounds were highly toxic at every developmental stage of Drosophila. The relative values of fecundity, viability and developmental time obtained on food media containing 5 different levels of potasium dichromate (500, 600, 700, 800, and 900 ppm), also 5 different levels of sodium arsenite and selenium dioxide (10, 15, 20, 25 and 30 ppm). Resulting in the relative values of fecundity and viability generally decreased, on the contrary developmental time generally reduced as the concentration of chemicals in the food increased. A significant reduction in the fecundity was observed between 800 and 900 ppm (p<0. 01) on the potasium dichromate media, between 15 and 20 ppm (p<0. 05) on the sodium arsenite media, between 20 and 25 ppm (p<0. 02) on the selenium dioxide media. A significant reduction in the viability was observed between 700 and 800 ppm (p<0. 01) on the potasium dioxide media, between 25 and 30 ppm (p<0. 01) on the sodium arsenite media, between 20 and 25 ppm (p<0. 01) on the selenium dioxide media. The developmental time was significantly reduced between 800 and 900 ppm (p<0. 001) on the potasium dioxide media, between 15 and 20 ppm (p<0. 001) on the sodium arsenite media, and between 25 and 30 ppm (p<0. 01) on the selenium dioxide media.

• 한국동물학회지
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• 제30권2호
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• pp.107-116
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• 1987

It is the purpose to investigate the physiological toxity and mutagenicity by heavy metal compounds such as potasium dichromate, sodium arsenite and selenium dioxide on the development of Drosophila melanogaster. These chemical compounds were highly toxic at every developmental stage of Drosophila. The relative values of fecundity, viability and developmental time obtained on food media containing 5 different levels of potasium dichromate (500, 600, 700, 800, and 900 ppm), also 5 different levels of sodium arsenite and selenium dioxide (10, 15, 20, 25 and 30 ppm). Resulting in the relative values of fecundity and viability generally decreased, on the contrary developmental time generally reduced as the concentration of chemicals in the food increased. A significant reduction in the fecundity was observed between 800 and 900 ppm (p<0. 01) on the potasium dichromate media, between 15 and 20 ppm (p<0. 05) on the sodium arsenite media, between 20 and 25 ppm (p<0. 02) on the selenium dioxide media. A significant reduction in the viability was observed between 700 and 800 ppm (p<0. 01) on the potasium dioxide media, between 25 and 30 ppm (p<0. 01) on the sodium arsenite media, between 20 and 25 ppm (p<0. 01) on the selenium dioxide media. The developmental time was significantly reduced between 800 and 900 ppm (p<0. 001) on the potasium dioxide media, between 15 and 20 ppm (p<0. 001) on the sodium arsenite media, and between 25 and 30 ppm (p<0. 01) on the selenium dioxide media.

• Bulletin of the Korean Chemical Society
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• 제22권12호
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• pp.1390-1392
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• 2001

• Bulletin of the Korean Chemical Society
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• 제16권4호
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• pp.349-355
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• 1995

Bromo-and chlorotrimethylsilane react with selenium dioxide in halocarbon solvents and generate selenium oxybromide and oxychloride, respectively. These in-situ generated oxyhalides turned out to be very efficient for selective bromination and chlorination of aldehydes and ketones. Under carefully controlled reaction conditions, second and third introduction of halogens into carbonyl compounds can be greatly suppressed, and high yields of monohalo compounds were obtained. The product ratios of this halogenation reactions can be best explained if the reactions are assumed to involve intermediate β-ketoselenenyl chlorides.

• Bulletin of the Korean Chemical Society
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• 제32권spc8호
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• pp.3137-3140
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• 2011

• Bulletin of the Korean Chemical Society
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• 제29권12호
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• pp.2513-2516
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• 2008

• Bulletin of the Korean Chemical Society
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• 제32권7호
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• pp.2316-2318
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• 2011

A novel technology has been developed for the synthesis of thioglycolic acid (TGA)-capped CdSe quantum dots (QDs) in aqueous medium. The reaction was carried out in air atmosphere with one-pot by using $SeO_2$ to replace Se or $Na_2Se$. The technological parameters including refluxing time, pH values and molar ratios of selenium to cadmium had significant influence on the luminescence properties of CdSe QDs. Furthermore, the obtained QDs were characterized by fluorescent spectroscopy, X-ray powder diffraction (XRD) and transmission electron microscopy (TEM), respectively. The results demonstrated that the CdSe QDs were of zinc-blended crystal structure in a sphere-like shape.

• Bulletin of the Korean Chemical Society
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• 제26권11호
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• pp.1856-1860
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• 2005

• 대한화학회지
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• 제52권1호
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• pp.47-51
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• 2008

조사 아래 불균일촉매 NaHSO4.SiO2의 존재하에서 5,7-diaryl-4,4-dimethyl-4,5,6,7-tetrahydropyridino [3,4-d]-1,2,3-selenadiazoles의 one-pot.

• 대한화학회지
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• 제48권4호
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• pp.385-393
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• 2004

Benzofuroxan과 ethyl acetoacetate를 반응시켜 2-ethoxycarbonyl-3-methylquinoxaline 1,4-dioxide (8)를 합성하고, 이것을 hydrazine hydrate 또는 selenium dioxide와 반응시켜 2-hydrazinocarbonyl-3-methylquinoxaline 1,4-dioxide (9) 또는 2-ethoxycarbonyl-3-formylquinoxaline 1,4-dioxide (10)를 합성하였다. 화합물 9를 alkanoyl chloride류, benzoyl chloride류, heteroacyl chloride류 및 benzenesulfonyl chloride류와 반응시켜 3-methyl-2-(substituted hydrazinocarbonyl)quinoxaline 1,4-dioxide류 (11-14)를 합성하였다. 화합물 9를 sodium nitrite와 반응시켜 2-azidocarbonyl- 3-methylquinoxaline 1,4-dioxide (15)를 합성한 다음, 이것을 디옥산/알코올류 용매하에서 환류시켜 Curtius 자리옮김반응에 의한 N-(3-methyl-1,4-dioxoquinoxalin-2-yl)-alkyl carbamate류 (16)를 합성하였다. 그리고 화합물 15를 치환 아닐린류와 반응시켜 2-(3-substituted phenylureido)-3-methylquinoxaline 1,4-dioxide류 (17)를 합성하였다. 한편 화합물 10을 benzoic hydrazide 또는 치환 아닐린류와 반응시켜 quinoxaline 1,4-dioxide류 (18, 19)를 각각 합성하였다. 그리고 합성한 화합물들에 대한 제초력과 살균력도 조사하였다.