• 제목/요약/키워드: Acetophenone

검색결과 102건 처리시간 0.026초

견섬유의 염색에 있어서 첨가용제의 영향( I ) (The Effect of Organic Solvent in the Dyeing of Silk Fiber)

  • 황성민;윤남식;임용진;이동수;이인전
    • 한국염색가공학회지
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    • 제1권1호
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    • pp.47-53
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    • 1989
  • The effect of organic solvent in the dyeing of silk fiber by acid dye was investigated. Acetophenone and benzyl alcohol were shown to be the most effective for the rate of dyeing of silk fiber by Milling Cyanine 5R (C.I. Acid Blue 113), a milling type acid dye, but, with benzyl alcohol, the equilibrium dye uptake was much lower than that in the absence of it. In the presence of solvent, maximum dye uptake shifted to lower temperature than 6$0^{\circ}C$, while without solvent, it was shown at about $60^\circ{C}$. When dyed by Orange II (C.I. acid Orange 7) under same condition equilibrium dye uptake of silk fiber was lower than that for milling type acid dye, and in the presence of benzyl alcohol, still much lower uptake resulted. All these fact reveals that organic solvents in the solvent-assisted dyeing of silk fiber broaden micelle spacings too much, resulting in increased rate of dyeing, and decreased equilibrium dye uptake, contrary to wool.

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Oxidation of Ethylbenzene Using Nickel Oxide Supported Metal Organic Framework Catalyst

  • Peng, Mei Mei;Jeon, Ung Jin;Ganesh, Mani;Aziz, Abidov;Vinodh, Rajangam;Palanichamy, Muthiahpillai;Jang, Hyun Tae
    • Bulletin of the Korean Chemical Society
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    • 제35권11호
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    • pp.3213-3218
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    • 2014
  • A metal organic framework-supported Nickel nanoparticle (Ni-MOF-5) was successfully synthesized using a simple impregnation method. The obtained solid acid catalyst was characterized by Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption and thermogravimetric analysis (TGA). The catalyst was highly crystalline with good thermodynamic stability (up to $400^{\circ}C$) and high surface area ($699m^2g^{-1}$). The catalyst was studied for the oxidation of ethyl benzene, and the results were monitored via gas chromatography (GC) and found that the Ni-MOF-5 catalyst was highly effective for ethyl benzene oxidation. The conversion of ethyl benzene and the selectivity for acetophenone were 55.3% and 90.2%, respectively.

Carbon-based Solid Acid Catalyzed One-pot Mannich Reaction: A Facile Synthesis of β-Amino Carbonyl Compounds

  • Davoodnia, Abolghasem;Tavakoli-Nishaburi, Afsaneh;Niloofar, Tavakoli-Hoseini
    • Bulletin of the Korean Chemical Society
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    • 제32권2호
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    • pp.635-638
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    • 2011
  • A simple and efficient method for the synthesis of $\beta$-amino carbonyl compounds by one-pot three-component Mannich reaction of acetophenone, aromatic aldehydes and aromatic amines using a carbon-based solid acid (CBSA), as an effective and reusable catalyst, is described. The present methodology offers several advantages such as simple procedure with an easy work-up, shorter reaction times, and high yields.

Photoinduced Enolization of 2-(Ortho-tolyl)benzofuran-3-one

  • Park, Bong-Ser;Eunsook Koh;Hyojeong Yoon;Chae, Woo-Ki
    • Journal of Photoscience
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    • 제9권1호
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    • pp.13-15
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    • 2002
  • The structurally rigid $\alpha$-(o-alkylphenyl) acetophenone derivatives lacking $\beta$-hydrogens, 3,3-dimethyl-2-o-tolylibdan-1-one and 2-o-tolyl-benzofuran-3-one, were prepared and their photochemical behaviors were examined. The former did not give any photoproduct while the latter turned into its enol tautomer. The difference of reactivity of two ketones was attributed to aromatic character of the extol of the benzofuranone. It was concluded that the reaction occurred via photoinduced 1,3-H transfer.

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3-(1'-Benzyl-2'-substituted indol-3'-yl)-1-acrylophenone유도체의 합성에 관한 연구 (A Study on syntheses of 3-(1'-Benzyl-2'-substituted indol-3'yl)-1-acrylophenone)

  • 이기창
    • 한국응용과학기술학회지
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    • 제11권2호
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    • pp.105-111
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    • 1994
  • Intermediates, 1-benzyl-2-substituted-3-carboxaldehyde[I]-[II], were prepared by the reaction of 2-substituted indole-3-carboxaldehyde with benzyl chloride. Indolylacrylophenone derivatives[III]-[X] were prepared from 1-benzyl-2-substituted-3-carboxaldehyde with acetophenone derivatives. They are as follows; 3-(1'-benzylindole-3'-yl)-1acrylophenone [III] 3-(1'-benzylindole-3-yl)-1(p-methoxy)acrylophenone [IV] 3-(1'-benzylindole-3-yl)-1(p-bromo)acrylophenone [V] 3-(1'-benzylindole-3-yl)-1(p-chloro)acrylophenone [VI] 3-(1'-benzyl-2'-methylindole-3'-yl)-1-acrylophenone [VII] 3-(1'-benzyl-2'-methylindole-3'-yl)-1-(p-methoxy)acrylophenone [VIII] 3-(1'-benzyl-2'-methylindole-3'-yl)-1-(p-bromo)acrylophenone [VIII] 3-(1'-benzyl-2'-methylindole-3'-yl)-1-(p-chloro)acrylophenone [X]

Alkoxy-amine-aluminum 유도체에 의한 키랄 분자 인식 (Chiral Molecular Recognition by Alkoxy-amine-aluminum Derivatives)

  • 김종미
    • 한국산업융합학회 논문집
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    • 제12권3호
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    • pp.143-147
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    • 2009
  • The enantioselective reduction of representative prochiral alkyl-aryl ketones with a new chiral alkoxy-amine-aluminum derivatives from aluminum hydride and ${\alpha},{\alpha}$-diphenyl-${\beta}$-amino alcohols, such as (S)-(-)-2-amino-3-methyl-1,1-diphenylbutan-1-ol(AMDPB) and (S)-(-)-2-(diphenylhydroxy-methyl)pyrrolidine(DPHMP), in THF at $0^{\circ}C$ was studied. In the reduction of alkoxy-amine-aluminum derivatives, acetophenone, propiophenone, isopropiophenone, and butyrophenone are reduced to corresponding aromatic secoundary alcohols with 34~60 % enantiomeric excess of (S)-isomers. For such ketones, the optical induction was enhanced by increasing a size of alkyl groups.

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헤테로 고리를 갖는 크리신 유도체의 합성 및 항염증 작용에 대한 평가 (Synthesis of Chrysin Analogs with a Heteroaryl Group and Evaluation for their Anti-inflammatory Activities)

  • 차해연;트루옹넉투엔;김현표;박해일
    • 약학회지
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    • 제55권6호
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    • pp.462-465
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    • 2011
  • Chrysin analogs with 2-heteroaryl groups were synthesized and evaluated for their inhibitory activities against $PGE_2$ and NO production from LPS-induced RAW 264.7 cells. Chrysin analogs were synthesized from 2-hydroxy-4,6-dimethoxy-acetophenone and heteroaryl aldehydes in 3 steps. The tested chrysin analogs showed decreased inhibitory activity against $PGE_2$ and NO production than those of chrysin.

자외선 경화형 유/무기 코팅제의 복합 필름 특성 (The hybrid film characteristics of UV-curable organic-inorganic coating solutions)

  • 이창호;김성래;이종대
    • 한국응용과학기술학회지
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    • 제28권2호
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    • pp.240-246
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    • 2011
  • UV-Curable hybrid coatings were synthesized to improve the surface properties of plastic film. Organic-inorganic coating solutions were prepared by the sol-gel method using urethane-acrylate oligomer, acrylate monomer, photo initiator and tetraethoxysilane (TEOS). Methacryloyloxypropyltrimethoxysilane(MPTMS) was used as a silane coupling agent to improve chemical interaction between inorganic phases and UV curable acrylate. In this study, the surface hardness and adhesive properties were improved with the use of inorganic component. The experimental results showed that UV-Curable hybrid films containing aliphatic urethane oligomer, hexanedioldiacrylate, trimethylolpropanetriacrylate, hydroxy dimethyl acetophenone exhibited good surface properties. Also, the optimum curing conditions were investigated.

니켈 촉매를 이용한 1,1'-Bis(dimethylsilyl)ferrocene과 Carbonyl 화합물의 Silylation 반응 (Nickel Catalyzed Silylation Reaction of Carbonyl Compounds with 1,1'-Bis(dimethylsilyl)ferrocene)

  • 공영건;이정현
    • 대한화학회지
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    • 제46권2호
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    • pp.139-144
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    • 2002
  • 니켈 착물을 촉매로 사용한 1,1´-Bis(dimethylsilyl)ferrocene [1]과 carbonyl 화합물 -benzaldehyde, 4-cyanobenzaldehyde, trimethylacetaldehyde, acetophenone과 benzophenone-은 3-oxa-2,5-disilacyclo-1,1′-ferrocene을 생성하였다. 이와 대비되게 동일한 반응조건에서 화합물 [1]과 isobutyraldehyde의 반응에는 1,1′-bis(dimethylsilyl)ferrocene의 Si-H 결합에 2개의 aldehyde ligand가 이중 삽입된 생성물이 형성되었다.

Biotransformation of Tranylcypromine in Rat Liver Microsomes

  • Kang, Gun-Il;Hong, Suk-Kil
    • Archives of Pharmacal Research
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    • 제11권4호
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    • pp.292-300
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    • 1988
  • Metabolism of tranylcypromine (TCP) in rat liver microsomes was studied in vitro using fortified microsomal preparations. As well as unlabeled TCP, two deuterium labeled analogs, TCP-phenyl-$d_{5}$ and TCP-cyclopropyl-$d_{2}$ were used and GC/MS employed which was then metabolized to cinnamaldehyde and hydrocinnamyl alcohol. Schiff bases of TCP with hydrocinnamaldehyde and acetaldehyde were detected and possibility of the metabolic formation of N-ethylidene TCP was proposed. In addition, acetophenone (benzoylacetic acid), benzaldehyde, benzoic acid, and benzyl alcohol were detected as the metabolites. Chemical decomposition studies suggested that parts of the oxidized products might be derived by air oxidation processes. A potential metabolite assumed to be N-ethylidene-1, 2-dihydroxy-3-phenylpropanamine oxide was also detected.

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