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Studies on the separation and detection unstable reaction intermediate by means of low temperature HPLC.

Research Project

Project/Area Number 63470034
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 分析・地球化学
Research InstitutionKobe Women's College of Pharmacy

Principal Investigator

MORIYASU Masataka  Kobe Women's College of Pharmacy, associate professor, 薬学部, 助教授 (40102107)

Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 1989: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1988: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsLow temperature HPLC / rotamer / tautomer / ternary complex / beta-diketone / cyclohexanone / formanilide / dithiocarbamate chelate / Low Temperature HPLC / ケト-エノ-ル互変異性 / 置換活性錯体 / 三元錯体生成平衡 / ジチオカ-バメ-ト / ジチゾネ-ト / キサンテ-ト / Low-Temperature HPLC / Ptアンシン錯体 / 反応中間体
Research Abstract

1. Rotamers of amids were separated by means of low-temperature HFLC(LT-HPLC), and their absorption spectra were measured by photodiode-array detector. Remarkable difference was found for UV-spectra of Z- and E-rotamer of formanilide. This was explained in terms of larger steric repulsion between benzene ring and oxygen atom in Z-form than that between benzene ring and hydrogen atom in E-form.
2. Keto- and enol-tautomers of several ketones were separated by means of LT-HPLC, and their absorption spectra were measured. Their spectra can reasonably be explained by comparing the known, compounds structurally resemble. The formation of labile hemiacetal was also found for fluoro-substituted beta-diketones. Their UV spectra quite resembled unconjugated keto-tautomer.
The reaction between BF_3 and beta-diketones or metal beta-diketone chelates was traced continuously. In the course of the reaction between Fe(AA)_3 and BF_3 the presence of unstable violet intermediate was observed. We tried the … More detection of the violet intermediate by LT-HPLC, but could not detect it even when HPLC was carried out below -70 ゚C.
LT-HPLC of cyclohexanone at -60゚C gave the separation of small peak, which was reasonably be attributable to the enoltautomer of cyclohexanone having vinyl alcohol structure.
3. Ternary complex formation between dithiocarbamates(DTC) and several other ligands of various metals was investigated by means of LT-HPLC. DTC chelates such as Zn(II), Tl(I), Fe(III), and Mn(III) whose stability constants are rather small, hardly gave peaks on the chromatograms when operated at room temperature.
However, by LT-HPLC these chelates were eluted quantitatively because dissociation of the chelate was retarded at low temperatures. The ternary complex formation of DTC, xanthates, dithizone, and other ligands was observed for several metal ions. It is interesting to note that the UV-visible spectra of the formed ternary complex differed markedly from original binary complexes when the formed ternary complex is very stable. Less

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] M.Moriyasu: "Kinetic Studies of Fast Equilibrium by Means of Highperformance Liquid Chromatography.XVII.Separation of Tautomers of 1,3-Cyclohexanediones." Bull.Chem.Soc.Jpn.61. 2955-2966 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] S.Murakami: "Studies on the Reaction of PtCl_2en,cis-Pt(NH_3)Cl_2 and Their Aqua Species with Adenosine,Deoxyadenosine and Adenine Using Ion-pair HPLC." Inorg.Chim.Acta. 152. 91-99 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Endo: "High-performance Liquid Chromatographic Determination of Hinokitiol in Cosmetics by the Formation of Difluoroborane Compounds." J.Chromatogr.455. 430-433 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu: "High-performance Liquid Chromatographic Behavior of Difluoroborane Derivatives of -Diketones." Anal.Sci.6. 45-49 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu: "A Semicontinuous Assay of Inhibition of Cyclic-AMP PHosphodiesterase by Benzo[c]phenanthridine Alkaloids" J.Liquid Chromatogr.(in press). 13. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu: "Kinetic Stuides of Fast Equilibrium by Means of Highperformance Liquid Chromatography.XVIII.Ternary Complex Formation of Labile Dithiocarbamate Chelates of Severa Metalsl." 投稿準備中.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu, A.Kota, and Y.Hashimoto: "Kinetic Studies of Fast Equilibrium by Means of High-performance Liquid Chromatography. XVII. Separation of Tautomers of 1, 3-Cyclohexanediones." Bull.Chem.Soc.Jpn., 61(8), 2955-2956(1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] S.Murakami, K.Saitou, A.Muromatsu, M.Moriyasu, A.Kato, and Y.Hashimoto: "Studies on the Reaction of PtC12en, cis-Pt(NH3)2C12 and Their Aqua Species with Adenosine and Adenine Using Ion-pair HPLC." Inorg.Chim.Acta, 152(1), 91-99(1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Endo, T.Mizutani, M.Yamamoto, M.Moriyasu, M.Ichimaru, A.Kato and Y.Hashimoto: "HPLC Determination of Hinokitiol in Cosmetics by the Formation of Difluoroboran Compounds." J.Chromatogr., 455(1), 430-433(1988).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu, M.Endo, M.Ichimaru, T.Mizutani, and A.Kato: "Difluoroboran Derivatives of beta-Diketones for High-performance Liquid Chromatography" Anal.Sci., 6(1), 45-48(1990).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu, M.Ichimaru, and A.Kato: "Semicontinuous HPLC Assay of Inhibition of Cyclic-AMP Phosphodiesterase by Benzo[c]phenanthridine Alkaloids" J.Liquid.Chromatogr., 13(1990).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] M.Moriyasu and A.Kato: "Kinetic Studies of Fast Equilibrium by Means of High-performance Liquid Chromatography. XVIII. Ternary Complex Formation between Dithiocarbamate and Dithizonate of Various Metal Ions" J.Chromatogr.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masataka Moriyasu: "Highーperformance Liquid Chromatographic Behavior of Difluoroborane Derivatives of βーDiketones" Anal.Sci.6. 45-49 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Masataka Moriyasu: "A Semicontinyous Assay of Inhibition of Cyclic-AMP Phosphodiesterase by Benzo[c]Phenanthridine Alkaloids" J,Liquid Chromatogr.13. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Masataka Moriyasu: "Kinetic Studies of Fast Equilibrium by Means of High-performance Liquid Chromatography.XVIII.Ternary Copmplex Formation of Labile Dithiocarbamate Chelates of Several Metals" J.Chromatogr.

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Moriyasu.: Bull.Chem.Soc.Jpn.61. 2955-2956 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] S.Murakami.: Inorg.Chim.Acta. 152. 91-99 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Endo.: J.Chromatogr.455. 430-433 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Moriyasu.: Anal.Sci.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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