• 제목/요약/키워드: diethylamine

검색결과 42건 처리시간 0.02초

아민과 有機할로겐 化合物間의 Charge Transfer Complex 形成에 關한 硏究 (I) (Charge Transfer Complex Formation of Amines with Organic Halides (I))

  • 김유선;오정희
    • 대한화학회지
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    • 제11권4호
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    • pp.121-125
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    • 1967
  • 各種 아민과 할로겐化合物間의 Charge Transfer Complex 形成與否를 檢討하여 보았다. Pyridine Tridthylamine, Piperidine Ethanolamine Triethanolamine, Aniline, Diethylamine 等의 아민類와 四鹽化炭素 또는 클로로폼의 混合溶液을 n-Hexane 溶媒存在下에서 紫外線吸收 스펙트라를 檢査한 結果 장파장쪽의 Shift가 있었으며 特히 Diethylamine과 Triethylamine은 클로로폼 또는 四鹽化炭素와 1:1 Charge Transfer Complex를 形成하였고, Piperidine은 接觸的 Complex를 形成하는 것이 確認되었다. Complex의 形成경향과 아민의 Nucleophilicity와의 關係를 論議하였다.

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$CH_3$OH용매에서 란탄족 원소{Ln(III)=Pr, Sm, Gd, Dy}-거대고리 착물과 한자리 리간드 간의 화학평형(제1보) (Chemical Equilibria of Lanthanides{Ln(III)=Pr, Sm, Gd, Dy}-Macrocyclic Complexes with Monodentate Ligands in $CH_3$OH(Part I))

  • 변종철;박유철;박신복
    • 대한화학회지
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    • 제43권3호
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    • pp.257-263
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    • 1999
  • 2,6-diformyl-p-creso1(DFPC)로부터 합성한 Ln-거대고리([20]DOTA) 착물, [Ln([20]DOTA)(NO3)(H2O)](NO3)2 xH2O{Ln(III)=Pr, Sm, Gd, Dy}를methanol용매에 2일정도 정치함으로써 [Ln([20]DOTA)(NO3)(CH3OH)]2+을 얻을 수 있다. 이 lanthanide-거대고리 착물에서 배위 된 CH3OH이 주게원자가 N인 보조리간드,La(=한자리 리간드;pyidine, imidazole, triethylamine, diethylamine, piperidine)에 의해 치환될 때 평형상수(K)를 25 oC, ㅒ=0.1M에서 분광학적 방법으로 결정하였다. 보조리간드의 pKa는 pyridine

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A Facile Preparation of Red Aminoquinones by Direct Irradiation of 1,4-BenzoQuinone and Naphthoquinones in Diethylamine

  • Kim, Sung Sik;Mah, Yoon Jung;Park, Sang Kyu
    • Journal of Photoscience
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    • 제11권2호
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    • pp.61-63
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    • 2004
  • Some quinones such as 1,4-benzoquinone 2, 1,4-naphthoquinone 3 and 1,2-naphthoquinone 4 dissolved in diethylamine were irradiated with 300 nm UV light to afford red aminoquinones 6, 7, and 9 as the major products. Irradiation of a solution of a primary product, i.e., 2,5-bis(diethylamino)-1,4-benzoquinone 6 in benzene gave 2,5-bis (ethylamino)-1,4-benzoquinone 10 in 80% yield, along with an oxazoline 11 in 19% yield via photochemical deethylation. A solution of 2-diethylamino-1,4-naphthoquinone 7 in benzene was also irradiated under the same condition, in which 2-ethylamino-1,4-naphthoquinone 12 was obtained in ca. 100% yield.

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Modifier Effects on Supercritical $CO_2$ Extraction Efficiency of Cephalotaxine from Cephalotaxus wilsoniana Leaves

  • Choi, Young-Hae;Kim, Jinwoong;Kim, Jin-Yeol;Joung, Seung-Nam;Yoo, Ki-Pung;Chang, Yuan-Shun
    • Archives of Pharmacal Research
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    • 제23권2호
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    • pp.163-166
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    • 2000
  • The effects of modifiers such as methanol, water diethylamine in methanol (10 v/v %), and diethylamine in water (10 v/v %) were investigated at three different concentrations (1, 5, and 10 v/v %) of the modifiers in supercritical $CO_2$ (SC-$CO_2$) in order to enhance the supercritical fluid extraction (SFE) efficiency of cephalotaxine from Cephalotaxus wilsoniana Leaves. Among the modifiers employed, methanol basified with diethylamine was found to greatly enhance the extraction efficiency relative to any other modifiers employed. The results suggest that cephalotaxine in plant matrices may be readily changed from SC-$CO_2$-insoluble salt to SC-$CO_2$-soluble free base by basified modifiers. In addition, SC-$CO_2$modified with basified methanol could enhance the extraction efficiency of cephalotaxine more than 30% when compared to the conventional organic solvent extraction.

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유기주석화합물과 불포화화합물과의 반응 (Reactions of Organostannyl Compounds with Unsaturated Compounds)

  • 이일규;서배석;김갑주
    • 대한화학회지
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    • 제24권5호
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    • pp.393-397
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    • 1980
  • Trimethylstannyl-diethylamine, -ethylsulfide, -methoxide 및 -hydroxide 등과 phenyl-isocyanate를 여러 온도에서 반응시킨 결과, $100^{\circ}C$ 이하에서는 triphenylisocyanurate만이 생성되었고, $150^{\circ}C$에서는 triphenylisocyanurate 와 diphenylcarbodiimide가 생성되었다. 한편, trimethylstannyldiethylamine과 chloral과의 반응에서는 N,N-diethylformamide와 trimethylstannyltrichloromethide가 생성되었으며, N-ethyl-N'-phenylcarbodiimide가 생성하였다.

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아민과 有機할로겐 化合物間의 Charge Transfer Complex 形成에 關한 硏究 (II) Electron Acceptor 에 따른 Charge Transfer Complex 形成能에 關한 硏究 (Charge-Transfer Complex Formation of Amines with Organic Halides (II) Complex Forming Tendency by Various Electron Acceptors)

  • 김유선;오정희
    • 대한화학회지
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    • 제11권4호
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    • pp.126-131
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    • 1967
  • 各 種 아민(triethylamine, diethylamine, pyridine, diphenylamine, dimethylaniline)과 各種 Electron Acceptor($CCl_4,\;ICl,\;I_2$)를 Hexane 溶媒 存在下에서 作用시킨 結果 各各 Charge Transfer Complex를 形成하였으나 그 形成能은 아민의 Basicity에 比例하였고 Electron Donor의 Polarity의 差가 클 때에는 다른 形式의 Complex를 形成함을 紫外線 吸收 分光法으로 確認하였다. Complex 形成能과 아민의 Basicity 및 Electron Acceptor의 Polarity의 關係를 論하였다.

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Biofilter에 의한 VOCs 및 악취물질의 제거특성에 관한 연구 (A Study on the removal characteristics of VOCs and Odors with Biofilter)

  • 박진도;서정호;이학성
    • 한국환경과학회지
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    • 제14권9호
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    • pp.843-849
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    • 2005
  • The objective of this research was to investigate the removal efficiencies ofVOCs and odors with newly developed biofilter which was designed to sustain the biofilm constantly on the packed media. Initially, four types of media, for example, fiber, activated carbon, ceramic and the mixture of activated carbon and ceramic(AIC mixture J, were used for packed materials of biofilter. When ethylalcohol was selected as a test gas for media efficiency, fiber and AIC mixture had better removal efficiencies of ethyl alcohol than others. Removal efficiencies for acetaldehyde, ethyl alcohol, butylalcohol, ethylacetate and diethylamine in biofilter with fiber and AIC mixture as packed media were increased as the residence time increased. Butylalcohol, especially, showed the maximum removal efficiency among all used VOCs and odors. In case of ethyl acetate, the difference of removal efficiencies between low and high residence times was wide remarkably.

용매열법을 이용한 CuInSe2 나노 입자 합성 (Synthesis of CuInSe2 Nanoparticles by Solvothermal Method)

  • 김기현;전영갑;박병옥;윤경훈
    • 한국재료학회지
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    • 제14권10호
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    • pp.737-742
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    • 2004
  • $CuInSe_2$ (CIS) nanoparticles of chalcopyrite structure were directly synthesized by a solvothemal method in an autoclave with diethylamine as a solvent. A morphology change of the nanoparticles was observed as a function of reaction temperatures and times. Dense rod-type CIS nanoparticles with width of $5\sim10mm$ and length in the range of 30-80 nm were obtained at $180^{\circ}C$ for 36 hrs whereas spherical particles with diameter in the range of 5-10 nm were observed at $250^{\circ}C$ for 36 hrs. The formation of the rod-like nanoparticles in diethylamine, without double N-chelation, was explained by the Solution-Liquid-Solid (SLS) mechanism.