• Journal of Korean Society for Atmospheric Environment
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• v.28 no.1
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• pp.52-58
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• 2012

In this study, the effect of standard phase difference in calibration of carbonyl compounds (CC) was evaluated by using their standards prepared in both gaseous and liquid phase. For this analysis, standards in both phases were prepared for 6 different CCs (formaldehyde (FA), acetaldehyde (AA), propionaldehyde (PA), butyraldehyde (BA), isovaleraldehyde (IA) and valeraldehyde (VA)) at similar concentration levels. Their gaseous standard was calibrated after derivatization with three types of DNPH cartridge, and their calibration results were compared against liquid-phase standards. Although there was a strong compatibility between 2 phases for CCs with lower molecular weights (e.g., formaldehyde and acetaldehyde), it was not the case for the heavier CCs. The results of our analysis indicate that the analytical bias of the heavier CCs can be significantly large (by more than a few tens of %). As a result, underestimation of hevier CCs can be significant, if their gaseous samples are quantified by liquid phase standard.

• Bulletin of the Korean Chemical Society
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• v.32 no.5
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• pp.1575-1578
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• 2011

Antimony trichloride (SbCl3) was demonstrated to be an effective catalyst for the cyanosilylation of a wide variety of carbonyl compounds under solvent-free conditions. The reactions proceeded smoothly at room temperature to afford the corresponding cyanosilylethers in good to excellent yields.

• Bulletin of the Korean Chemical Society
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• v.31 no.7
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• pp.1927-1930
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• 2010

A fast, efficient, and high yielding method for the preparation of amines by reductive amination of aldehydes and ketones using sodium borohydride in the presence of cellulose sulfuric acid in EtOH and under solvent-free conditions at room temperature is described.

• Bulletin of the Korean Chemical Society
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• v.28 no.12
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• pp.2431-2434
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• 2007

Potassium L-aspartate has been used as a catalyst for the cyanosilylation of carbonyl compounds producing corresponding cyanohydrin trimethylsilyl ethers in excellent yield of up to 98%. Although the catalyst is chiral, the enantioselectivities observed are generally poor except for one case, α-naphthaldehyde, 89% ee.

• Bulletin of the Korean Chemical Society
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• v.29 no.1
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• pp.76-80
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• 2008

Reductive acetylation of a variety of carbonyl compounds such as aldehydes, ketones and a,b-unsaturated enals/enones was carried out efficiently with pyridine zinc borohydride, (Py)Zn(BH4)2, in a mixture of THF-EtOAc at room temperature or under reflux condition. The corresponding acetates were obtained in high to excellent yields. In addition, chemoselective reductive acetylation of aldehydes over ketones was achieved perfectly with the reagent at room temperature.

• Journal of the Korean Chemical Society
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• v.7 no.1
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• pp.85-90
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• 1963

The Knoevenagel reaction of fluorinated carbonyl compounds, 1,1,1-trifluoro-propanone-2-heptafluoro-butyraldehyde, 1,3-dichloro-1,1,3,3-tetrafluoro-acetone, tetradecafluoro-heptanone-4 and 2,2,2-trifluoro-acetophenone yielded fluorinated ${\beta},{\beta}$-dialkyl-${\beta}$-hydroxy acids. Dehydration of the acids do not give the olefinic acid in the case of the perfluorinated system and gave a lactone. From the consideration of electronic and steric effects a mechanismic path of the reaction via a carbanion intermediate was proposed for the reaction. Preparation of related derivatives are also described.

• Bulletin of the Korean Chemical Society
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• v.25 no.5
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• pp.603-604
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• 2004

• Journal of Photoscience
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• v.9 no.1
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• pp.5-7
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• 2002

Direct irradiation of carbonyl compounds such as some aldehydes, ketones and anthraquinone in N,N-dimethylamiline(DMA), without using other solvents, gave $\beta$-hydroxyamines as the major products. Irradiation of anthrone and DMA in methanol afforded ${\gamma}$-hydroxyamine. The structure of the photoproduct was confirmed by treatment with an acid to give a bicyclic compound.

• Bulletin of the Korean Chemical Society
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• v.23 no.3
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• pp.423-426
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• 2002

Treatment of conjugated cyclodienes (5a-5c) with excess ozone in dichoromethane in the presence of added carbonyl compounds (3) resulted to give the corresponding diozonides 10 and cross-ozonides 14. Similarly, ozonolysis of the nonconjugated 1,4-cyclohexadiene (6a) and 1,5-cyclooctadiene (6b) under same conditions afforded both diozonides 20 and cross-ozonides 14. On the other hand, Ozonolysis of bicyclo[2.2.0]hepta-2,5-diene (6c) in the presence of 3A provided the corresponding diozonide 19.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.89-91
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• 1999

최근 전국적으로 생활수준이 향상됨에 따라 생활환경의 질적 향상에 대한 욕구가 높아져 그다지 문제시되지 않았던 냄새를 악취로 여기게 되었으며 이를 민원으로 제기하는 사례가 늘고 있다. 이미 선진국을 비롯한 상당수의 국가에서 많은 관심의 대상이 되어왔던 알데히드류와 키톤류 능과 같은 카르보닐계 화합물(Carbonyl compounds)은 악취의 원인물질일 뿐만 아니라 인체에 대해 악영향을 미치고 있다. 특히 카르보닐 화합물중 포름알데히드(Formaldehyde)는 호흡기 계통의 질병 및 피부 알레르기를 유발시키는 것으로 보고되고 있다.(중략)