• Bulletin of the Korean Chemical Society
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• 제23권11호
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• pp.1503-1504
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• 2002

• Bulletin of the Korean Chemical Society
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• 제13권2호
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• pp.184-187
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• 1992

Regeneration methods of oximes, hydrazones, and N,N-dimethylhydrazones to the related carbonyl compounds were effected using various dicarbonyl compounds which are activated with electron withdrawing substituents such as trifluoromethylated $\beta-diketones$, $\beta-acylpyruvates$, and $\alpha-diketones$ via an equilibrium exchange reaction. The chemical transformations of the dicarbonyl compounds in the exchange reaction were investigated by various spectroscopic methods.

• Journal of the Korean Wood Science and Technology
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• 제37권1호
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• pp.12-18
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• 2009

본 연구는 실내마감자재가 실내공기질에 미치는 영향을 조사하기 위하여 목재주택 내 친환경 마감자재로 처리한 시험실 내부의 카르보닐화합물의 방산특성을 조사하였다. 실험 결과 포름알데히드, 아세톤 및 헥사알데히드가 카르보닐화합물의 대부분을 차지하였으며, 이 중 포름알데히드가 25.6~30.5%로 가장 높은 비중을 차지하였다. 시험실 R2-2를 제외한 모든 시험실에서 포름알데히드 방산량이 신축 공동주택의 실내공기질 권고기준치 이하를 나타내었고, 아세트알데히드의 경우 시험실 R1-3을 제외한 나머지 시험실에서 일본 후생노동성에서 제시한 기준($48{\mu}g/m^3$)을 초과하는 것으로 나타났다. 황토벽지를 사용한 R1-1에서 상대적으로 높은 방산량을 나타내었고, 대나무숯 패널을 설치한 R2-2에서 모든 카르보닐화합물에 대해 높은 방산량을 나타내었다. 편백으로 치장한 거실인 시험실 R1-3은 나머지 시험실에 비해 아세톤을 제외하고 전반적으로 낮은 포름알데히드와 카르보닐화합물 방산량을 나타내었다.

• Asian Journal of Atmospheric Environment
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• 제7권3호
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• pp.152-160
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• 2013

Seven potentially harmful bifunctional carbonyls were measured in particulate and gaseous phases at a roadside site and a suburban site in an area about 30 km north-northwest from Tokyo metropolitan area in the Kanto region in Japan. For the first time, these compounds were measured in both phases with a time resolution of 2 h. We found that wind direction is an important parameter that affects the collection of these compounds near the source, and it can cover the effects of other important variables. Our results confirmed that motor vehicles and especially diesel fuelled vehicles are important sources of these compounds. Photochemical generation is also an important source of these compounds in the gaseous phase. Transportation from the urban area is also important, particularly in the aerosol phase.

• Bulletin of the Korean Chemical Society
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• 제24권4호
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• pp.407-408
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• 2003

• Bulletin of the Korean Chemical Society
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• 제24권7호
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• pp.1002-1004
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• 2003

• Bulletin of the Korean Chemical Society
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• 제20권7호
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• pp.775-776
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• 1999

• Bulletin of the Korean Chemical Society
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• 제22권11호
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• pp.1277-1279
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• 2001

• Bulletin of the Korean Chemical Society
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• 제27권5호
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• pp.667-671
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• 2006

The new MPV-type reagents, B-acetoxydiisopinocampheylborane ($Ipc _2$BOAc) and B-trifluoroacetoxydiisopinocampheylborane $(Ipc _2BO _2CCF _3)$, have been prepared and their reducing characteristics in the reduction of carbonyl compound have been examined in order to find out a new reducing system with unique applicability in organic synthesis. In general, the reactivity of $Ipc _2BO _2CCF _3$ appears to be stronger than that of $Ipc _2$BOAc, presumably due to the acidity increase by the electron-withdrawing fluorine-substituent. Both reagents show an excellent selectivity in 1,2-reduction of $\alpha,\beta$-unsaturatedcarbonyl compounds and in competitive reduction between structurally different carbonyl compounds. In addition, $Ipc _2BO _2CCF _3$ shows interesting features in the stereoreduction of cyclic ketones.

• 한국환경과학회지
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• 제19권7호
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• pp.807-818
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• 2010

The study is about variations in Carbonyl compounds concentration within apartment buildings according to pre-residence and residence. We consecutively investigated indoor air pollutants in 120 households in 6 cities at pre-residence and residence. Carbonyl compounds were collected using the 2,4-DNPH cartridge and were analyzed using HPLC. The carbonyls concentration of indoor air in the new apartments before occupation measured formadlehyde($76.0\;{\mu}g/m^3$), acetone($85.9\;{\mu}g/m^3$), acetaldehyde($13.8\;{\mu}g/m^3$). The carbonyls concentration of indoor air in the new apartments after occupation measured formadlehyde($233.1\;{\mu}g/m^3$), acetone($128.9\;{\mu}g/m^3$), acetaldehyde($29.8\;{\mu}g/m^3$), respectively. As a result, the mean concentration of carbonyl compounds within the pre-occupancy stage was lower than those of residence.