H<sub>2</sub>O<sub>2</sub> Oxidation of 1,4-Dihydropyridines over Mg<sup>2+</sup> Ion Exchanged Clinoptilolite and Solventless Solid State Acid Decomposition of Ester to 3,5-Pyridinedicarboxylic Acid

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  • YAMASHIRO Takashi
    Department of Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University
  • SATO Kanji
    Department of Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University
  • NOMURA Masayuki
    Department of Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University
  • NAKATA Shinichi
    Department of Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University

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Other Title
  • Mg<sup>2+</sup>イオン交換クリノプチロライトによる1,4-ジヒドロピリジン類のH<sub>2</sub>O<sub>2</sub>酸化及び無溶媒固相エステル酸分解による3,5-ピリジンジカルボン酸の合成
  • Mg[2+]イオン交換クリノプチロライトによる1,4-ジヒドロピリジン類のH2O2酸化及び無溶媒固相エステル酸分解による3,5-ピリジンジカルボン酸の合成
  • Mg 2 イオン コウカン クリノプチロライト ニ ヨル 1 4 ジヒドロピリジンルイ ノ H2O2 サンカ オヨビ ムヨウバイコソウ エステルサン ブンカイ ニ ヨル 3 5 ピリジンジカルボンサン ノ ゴウセイ

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Abstract

  The acid property of alkali and alkali earth cation exchanged clinoptiolites were observed by micro-calorimetry of NH3 adsorption at 200°C. The reaction rates on decomposition of tert-butyl acetate (TBA) over clinoptilolites was proportional to the acid strength. 1,4-Dihydropyridines were oxidized to corresponding Pyridines in high yields at room temperature by H2O2 aqueous solution over Mg2+ ion exchanged clinoptilolte (CZ-Mg) in acetone. Solventless acid ester decomposition of Di-tert-butyl 3,5-pyridinedicarboxylate to 3,5-Pyridinedicarboxylic acid was effected using CZ-Mg at 170°C.<br>

Journal

  • YAKUGAKU ZASSHI

    YAKUGAKU ZASSHI 129 (10), 1249-1254, 2009-10-01

    The Pharmaceutical Society of Japan

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