• Title, Summary, Keyword: phthalimide

Search Result 51, Processing Time 0.027 seconds

A Study on Antimicrobial Activity of N-(fluorodichlomethylthio) Phthalimide-Ag Complex of Reclaimed Rubber Mat (리사이클 고무 매트의 N-(fluorodichlomethylthio) Phthalimide-Ag Complex에 관한 항미생물 활성 연구)

  • Kim, Ki-Jun;Lee, Joo-Youb;Park, Tae-Sul
    • Journal of the Korean Applied Science and Technology
    • /
    • v.28 no.4
    • /
    • pp.491-496
    • /
    • 2011
  • N-(fluorodichlomethylthio) phthalimide-silver complexes were prepared and investigated the antimicrobial activity on rubber mat manufactured with waste rubber. We are exposed to harmful bacteria and fungi all the time. We manufactured antimicrobial mat to be imposed to mats that it can prevent generation of bacteria and microorganisms, and restrict their reproduction. Infection of medical devices causes significant morbidity and mortality. For aim of this study, we measured the antimicrobial mat manufactured with N-(fluorodichlomethylthio) phthalimide-Ag complex by CCD, FT-IR and NMR. The effect of mole ratio of N-(fluorodichlomethylthio) phthalimide-Ag complex on antibacterial activity to bacteria and fungi is investigated. Reduction rate is evaluated using the Quinn method. Escherichia Coli is effectively inhibited than Staphylococcus aureus by antimicrobial mat.

Electrical Behaviour of Some Phthalimide Derivatives and Their Complexes with Transition Metals

  • Mohamed Gamal Abd Ei Wahed;Kamel Ei Manakhly;Hamdy Hammad;Atiat Barakat
    • Bulletin of the Korean Chemical Society
    • /
    • v.17 no.3
    • /
    • pp.285-288
    • /
    • 1996
  • The electrical conductivity of some phthalimide derivatives and their complexes with Co(II), Ni(II), Cu(II), or Zn(II) has been measured in the temperature range 290-435 K. Both the structure of phthalimide molecule and its complexes played an effective role in the conduction process. Conductometric titration and IR spectra were used to characterize the structure of studied samples.

  • PDF

The Synthesis of $\alpha$-lhnctionalized Benzykmine ($\alpha$-Functionalized Benzylamine의 합성)

  • Kim, Hyeung-Jae;Cho, Su-Dong;Ahn, Chul Jin;Joo, Woo-Hong;Shin, Dong Soo
    • Journal of the Korean Chemical Society
    • /
    • v.44 no.5
    • /
    • pp.442-447
    • /
    • 2000
  • $\alpha$-Functionalized benzylamine(Nu=OAc, OMe, N$_3$) will be very usefud as a starting material or synton in organic synthesis. We have investigated the first synthetic methodology of phthalimide-ben-zylacetate from benzylphthalimide, which are prepared in NBS/NaOAc/HOAc in chlorobenzene at 137$^{\circ}C$ for 12 hr in good yield. Finally, amino(phenyl)methyl acetate (1) was synthesized from phthalimide-benzyl acetate under NH$_2$NH$_2$/HOAC.

  • PDF

Photocyclization Reactions of N-(Trimethylsilylmethoxyalkyl)Phthalimides. Efficient and Regioselective Route to Heterocycles

  • Yoon Ung Chan;Oh Ju Hee;Lee, Sang Jin;Kim, Dong Uk;Lee, Jong Gun;Kang Kyung-Tae;Mariano Patrick S.
    • Bulletin of the Korean Chemical Society
    • /
    • v.13 no.2
    • /
    • pp.166-172
    • /
    • 1992
  • Studies have been conducted to explore single electron transfer (SET) induced photocyclization reactions of N-(trimethylsilylmethoxyalkyl)phthalimides(alkyl=E thyl, n-propyl, n-butyl, n-pentyl, and n-octyl). Photocyclizations occur in methanol in high yields to produce cyclized products in which phthalimide carbonyl carbon is bonded to the carbon of side chain in place of the trimethylsilyl group. Mechanism for these photocyclizations involving intramolecular SET from oxygen in the $\alpha-silylmethoxy$ groups to the singlet excited state phthalimide moieties followed by desilylation of the intermediate $\alpha-silylmethoxy$ cation radicals and cyclization by radical coupling are proposed. In contrast, photoreaction of N-(trimethylsilylmethoxyethyl) phthalimide in acetone follows different reaction routes to produce two cyclized products in which carbon-carbon bond formation takes place between the phthalimide carbonyl carbon and the carbon $\alpha$ to silicon and oxygen atoms via triplet carbonyl hydrogen abstraction triplet carbonyl silyl group abstraction pathways. The normal singlet SET pathway dominates these triplet processes for photoreaction of this substance in methanol. The efficient and regioselective cyclization reactions observed for photolysis in methanol represent synthetically useful processes for construction of medium and large ring heterocyclic compounds.

  • PDF

A Study on Spin-Lattice Relaxation of Methyl Protons in 2,6-Dichlorotoluene and N-Methyl Phthalimide

  • Lee, Jo-Woong;Lim, Man-Ho;Rho, Jung-Rae
    • Bulletin of the Korean Chemical Society
    • /
    • v.12 no.1
    • /
    • pp.47-51
    • /
    • 1991
  • Spin-lattice relaxation of methyl protons in 2,6-dichlorotoluene and N-methyl phthalimide, each dissolved in CDCl$_3$, has been studied at 34$^{\circ}$C and the contribution from spin-rotation interaction to the relaxation process has been separated from that due to dipole-dipole interactions among methyl protons. The results show that the spin-rotational contributions to the initial rate of relaxation in 2,6-dichlorotoluene and N-methyl phthalimide amount to 18 and 31%, respectively, of the total relaxation rate at 34$^{\circ}$C. The method of separating the spin-rotational contribution from that of dipolar interactions adopted in this paper is based on the well known fact that in an A$_3$ spin system such as methyl protons in liquid phase dipolar relaxation mechanism gives non-exponential decay of the z-component of total magnetization of protons while the random field fluctuation such as spin-rotational mechanism causes exponential decay.

  • PDF

Preparation of Poly(imide-aramid-sulfone)s and their Thermal Properties (폴리(이미드-아라미드-설폰)의 합성과 그들의 열적성질)

  • Park, Hyung-Seok;Gong, Myoung-Seon
    • Polymer(Korea)
    • /
    • v.36 no.4
    • /
    • pp.427-433
    • /
    • 2012
  • A series of poly(imide-aramid-sulfone)s with alternatingly introduced imide/aramid groups were prepared by reacting divinyl sulfone (DVS) and $N^1,N^4$-bis(4-(vinylsulfonyl)phenyl)terephthalamide (2) with pyromellitic diimide. Three model compounds, N-[2-(p-aminophnenylsulfonyl)ethyl]phthalimide (3), 2,2'-(2,2'-sulfonylbis(ethane-2,1-diyl))diisoindoline-1,3-dione (4), and N,N-bis(4-(2-(1,3-dioxoisoindolin-2-yl)ethylsulfonyl)phenyl)terephthalamide (5), resembling polymers were prepared with good yields by reacting p-aminophenyl vinyl sulfone, DVS, and 2 with phthalimide. Condensation polymerization was carried out by Michael-type addition reaction of the difunctional phthalimide group with the DVS group in the presence of tetrabutylammonium hydroxide (TBAH), resulting in poly(imide-aramid-sulfone)s 6-12 with moderate molecular weights and good yields. They were highly soluble in polar solvents such as N,N-dimethylformamide, dimethylsulfoxide, N-methylpyrrolidinone and tetrahydrofuran. The ratios of DVS/2 were 1/0, 3/1, 2/1, 1/1, 1/2, 1/3, and 0/1. Molecular weight and physical properties such as solubility, viscosity, and thermal properties of the polymers were examined.

Syntheses of Phosphonamides Containing Aminobenzylphosphonic Acid and Aminopenicillanic Acid

  • Hong, Suk-In;Kim, Chang-Sick;Kim, Yong-Joon
    • Bulletin of the Korean Chemical Society
    • /
    • v.4 no.4
    • /
    • pp.171-175
    • /
    • 1983
  • This paper reports new phosphonamide derivatives which contain diethyl aminomethylphosphonate, diethyl DL-1-aminobenzylphosphonate and 6-aminopenicillanic acid; N-(ethyl phthalimidomethylphosphonyl)-L-methionine methyl ester, N-(ethyl phthalimidomethylphosphonyl)-L-valine ethyl ester, N-[ethyl N-(methoxycarbonylmethyl)benzylphosphonamido]-2-phthalimidoacetamide, N-[ethyl N-(diethyl phosphonylbenzyl)methylphthalamido] phthalimide, N-[ethyl {ethyl N-(diethyl phosphonylbenzyl)aminomethylphosphonamido} phosphonylmethyl] phthalimide, N-[ethyl N-(diethyl phosphonylbenzyl)methylphosphonamido]-2-phthalimidoacetamide, N, N'-bis (ethyl phthalimidomethylphosphonyl)ethylene diamine, 6-(ethyl DL-1-aminobenzylphosphonamido) penicillanic acid, ethyl N-(ethoxycarbonylmethyl)-1-aminobenzylphosphonamide, ethyl N-(diethyl phosphonylbenzyl)aminomethylphosphonamide and N,N'-bis (ethyl aminomethylphosphonyl) ethylene diamine.

  • PDF

Synthesis of novel disperse dyes derived from phthalimide containning diester groups and their dyeing properties

  • Choi, Jae-Hong;Choi, Jong-Yun;Lee, Hyun-Young;Kwon, Oh-Tak
    • Proceedings of the Korean Society of Dyers and Finishers Conference
    • /
    • /
    • pp.45-46
    • /
    • 2009
  • In this study, 12 azo disperse dyes based on phthalimide were synthesized including their precursors. The chemical structures of the dyes and the corresponding precursors were analyzed by the GC-MASS, $^1H$ NMR spectra and elemental analysis. The dyeability on PET, such as step dyeing and build-up properties and color fastness were examined using conventional exhaust dyeing procedures.

  • PDF

Exploratory Study of Photocyclization Reactions of N-(Trimethylsilylmethylthioalkyl)phthalimides

  • Ung Chan Yoon;Sang Jin Lee;Kyung Ja Lee;Sung Ju Cho;Chan Woo Lee;Patrick S. Mariano
    • Bulletin of the Korean Chemical Society
    • /
    • v.15 no.2
    • /
    • pp.154-161
    • /
    • 1994
  • Studies have been conducted to explore single electron transfer (SET) induced photocyclization reactions of N-(trimethylsilylmethylthioalkyl)phthalimides (alkyl=ethyl, n-propyl, n-butyl, n-pentyl, and n-hexyl). Photocyclizations occur in methanol in modest to high yields to produce cyclized products in which phthalimide carbonyl carbon is bonded to the carbon of side chain in place of the trimethylsilyl group. Mechanism for these photocyclizations involving intramolecular SET from sulfur in the ${\alpha}$-silylmethylthioalkyl groups to the singlet excited state phthalimide moieties followed by desilylation of the intermediate ${\alpha}$ -silylmethylthio cation radicals and cyclization by radical coupling is proposed. In contrast, photoreactions of N-(trimethylsilylmethylthioalkyl)phthalimides in acetone follow different reaction routes to produce another cyclized products in which carbon-carbon bond formation takes place between the phthalimide carbonyl carbon and the carbon ${\alpha}$ to silicon and sulfur atoms via triplet carbonyl hydrogen abstraction pathway. The normal singlet SET pathway dominates this triplet process for photoreactions of these substances in methanol while the triplet process dominates the singlet SET pathway for those in acetone. The efficient and regioselective cyclization reactions observed for photolyses in methanol represent synthetically useful processes for construction of medium and large ring heterocyclic compounds.

  • PDF