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ZnO-NP assisted synthesis of fluorescent beta-carboline C-1 tethered benzimidazole/benzothiazole/benzoxazole derivatives and assessment of their photophysical properties

机译:荧光β-咔啉C-1型苯并咪唑/苯并噻唑/苯并恶唑衍生物的辅助合成及其光学性质的评估

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摘要

A facile transformation of 1-formyl beta-carboline into fluorescent beta-carboline C-1 tethered benzazole derivatives is described under the catalysis of ZnO nanoparticles. The reaction proceeded with the reaction of 1-formyl beta-carboline and substituted o-diaminobenzene/2-aminobenzenethiol/2-aminophenol, which results in formation of a Schiff base, followed by an intramolecular cylization reaction to generate beta-carboline linked benzimidazole, benzothiazole and benzoxazole derivatives. This appraoch displayed a wide substrate scope and high regioselectivity to yield the desired products in moderate to good yields. The photophysical properties of the synthesized derivatives were also evaluated and they exhibited excellent fluorescence properties. Among these beta-carboline substituted azoles, the benzothiazole derivative displayed the maximum quantum yield (phi(F) up to 28%).
机译:在ZnO纳米颗粒的催化下描述了1-甲酰β-咔啉的1-甲酰β-咔啉C-1型苯并吡唑衍生物的容纳转化。 反应采用1-甲酰基β-咔啉和取代的O-二氨基苯/ 2-氨基苯酚/ 2-氨基苯酚的反应进行,这导致形成Schiff碱,其次是分子内圆柱形反应,以产生β-咔啉连接苯并咪唑, 苯并噻唑和苯并恶唑衍生物。 该估算量展示了宽的基底范围和高区域选择性,以产生中等至良好产量的所需产物。 还评估了合成衍生物的光物理性质,并且它们表现出优异的荧光性质。 在这些β-咔啉取代的唑胺中,苯并噻唑衍生物显示最大量子产率(PHI(F)至28%)。

著录项

  • 来源
    《New Journal of Chemistry》 |2019年第46期|共12页
  • 作者单位

    Dr BR Ambedkar Natl Inst Technol NIT Dept Chem Jalandhar 144011 Punjab India;

    Dr BR Ambedkar Natl Inst Technol NIT Dept Chem Jalandhar 144011 Punjab India;

    NIT Dept Chem Kurukshetra 136119 Haryana India;

    Manipal Univ Jaipur Dept Chem Jaipur 303007 Rajasthan India;

    Dr BR Ambedkar Natl Inst Technol NIT Dept Chem Jalandhar 144011 Punjab India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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