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β‐Alanine‐functionalized magnetic graphene oxide quantum dots: an efficient and recyclable heterogeneous basic catalyst for the synthesis of 1H‐pyrazolo[1,2‐b]phthalazine‐5,10‐dione and 2,3‐dihydroquinazolin‐4(1H)‐one derivatives
Applied Organometallic Chemistry ( IF 3.9 ) Pub Date : 2020-08-02 , DOI: 10.1002/aoc.5872 Masoud Khaleghi Abbasabadi 1 , Davood Azarifar 1
Applied Organometallic Chemistry ( IF 3.9 ) Pub Date : 2020-08-02 , DOI: 10.1002/aoc.5872 Masoud Khaleghi Abbasabadi 1 , Davood Azarifar 1
Affiliation
In this research, we report a novel synthesis of magnetic β‐alanine‐functionalized‐graphene oxide quantum dots Fe3O4@GOQDs‐N‐(β‐alanine) as a recyclable and eco‐friendly heterogeneous nanocatalyst. The catalytic efficiency of these nanosheets was explored as a basic catalyst for a one‐pot three‐component synthesis of various 1H‐pyrazolo[1,2‐b]phthalazine‐5,10‐dione and 2,3‐dihydroquinazolin‐4(1H)‐one derivatives. The reactions proceeded smoothly under mild and green conditions to afford the respected products in excellent yields. The structure of this newly fabricated catalyst was successfully confirmed by different analytical techniques such as Fourier transform infrared spectroscopy, X‐ray diffraction, field emission‐scanning electron microscopy, high‐resolution transmission electron microscopy, energy‐dispersive X‐ray spectroscopy, vibrating sample magnetometry, and thermogravimetric analysis. The stability and recyclability of the catalyst were examined by performing the model reaction in six consecutive runs. The recovered catalyst from the first run was directly used for the next runs with no significant loss of catalytic activity.
中文翻译:
β-丙氨酸官能化的氧化石墨烯量子点:一种高效且可循环利用的非均相碱性催化剂,用于合成1H-吡唑并[1,2-b]邻苯二甲酰5,10-二酮和2,3-二氢喹唑啉-4(1H)一阶导数
在这项研究中,我们报告了一种新颖的磁性β-丙氨酸功能化氧化石墨烯量子点Fe 3 O 4 @ GOQDs - N-(β-丙氨酸)的合成方法,可作为一种可回收利用且生态友好的多相纳米催化剂。这些纳米片的催化效率被探索为一种基本的催化剂,用于一锅三组分合成各种1 H-吡唑并[1,2 - b ]酞嗪-5,10-二酮和2,3-二氢喹唑啉-4( 1小时)-一阶导数 反应在温和和绿色的条件下顺利进行,以优异的收率得到值得关注的产物。通过不同的分析技术,例如傅立叶变换红外光谱,X射线衍射,场发射扫描电子显微镜,高分辨率透射电子显微镜,能量色散X射线光谱,振动样品,成功地证实了这种新型催化剂的结构。磁力分析和热重分析。通过连续六次进行模型反应来检查催化剂的稳定性和可循环性。从第一次运行中回收的催化剂直接用于下一次运行,而催化活性没有明显损失。
更新日期:2020-09-14
中文翻译:
β-丙氨酸官能化的氧化石墨烯量子点:一种高效且可循环利用的非均相碱性催化剂,用于合成1H-吡唑并[1,2-b]邻苯二甲酰5,10-二酮和2,3-二氢喹唑啉-4(1H)一阶导数
在这项研究中,我们报告了一种新颖的磁性β-丙氨酸功能化氧化石墨烯量子点Fe 3 O 4 @ GOQDs - N-(β-丙氨酸)的合成方法,可作为一种可回收利用且生态友好的多相纳米催化剂。这些纳米片的催化效率被探索为一种基本的催化剂,用于一锅三组分合成各种1 H-吡唑并[1,2 - b ]酞嗪-5,10-二酮和2,3-二氢喹唑啉-4( 1小时)-一阶导数 反应在温和和绿色的条件下顺利进行,以优异的收率得到值得关注的产物。通过不同的分析技术,例如傅立叶变换红外光谱,X射线衍射,场发射扫描电子显微镜,高分辨率透射电子显微镜,能量色散X射线光谱,振动样品,成功地证实了这种新型催化剂的结构。磁力分析和热重分析。通过连续六次进行模型反应来检查催化剂的稳定性和可循环性。从第一次运行中回收的催化剂直接用于下一次运行,而催化活性没有明显损失。