Novel synthesis of 1,5-disubstituted-1,2,3-triazolines catalysed by Zepto magnetic microspheres under the influence of a rotating magnetic field

Sharma Priyanka; Vallabhapurapu Srinivasu V.; Ho Wei H.; Hemmaragala Nanjundaswamy M.

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Novel synthesis of 1,5-disubstituted-1,2,3-triazolines catalysed by Zepto magnetic microspheres under the influence of a rotating magnetic field

机译：在旋转磁场的影响下，Zepto磁性微球催化的1,5-二取代-1,2,3-三唑的新合成

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The novel reactor has been designed to perform chemical reactions under the influence of a magnetic field generated by alternating magnetic poles as a function of time. The system was successfully employed to synthesize a series of 1,5-disubstituted-1,2,3-triazolines via the regioselective [3 + 2] cycloaddition reactions between alkyl/aryl azides and nitroolefins catalysed by Zepto (para magnetic ultra-blue carboxy functionalized) microspheres (bead diameter 2.5 mu m). All of the reactions went smoothly without any adverse effect on nitro, cyano, thienyl, hydroxy, halogens, and ether functions at 25 +/- 2 degrees C and afforded 82%-99% pure products at a magnetic field of 18.99 mT and an exposure time of 180-240 min. The influence of the magnetic force exerted on the magnetic materials was found to enhance the catalytic activity of microspheres. The catalyst could easily be separated by simple centrifugation, which could be reused for at least 15 runs with no loss in activity.

机译：新颖的反应器已经设计成在通过交替磁极产生的磁场的影响下进行化学反应，作为时间的函数。成功使用该系统以通过Zepto（Zepto催化的烷基/芳基叠氮化物和亚甲烯烃）之间的区域选择性[3 + 2]环加成反应合成一系列1,5-二取代的-1,2,3-三唑胺（Para磁性超蓝羧基官能化）微球（珠径2.5μm）。所有反应都在没有对硝基，氰基，噻吩基，羟基，卤素和乙醚的任何不利影响，在25 +/- 2℃下效果，并在18.99 mt的磁场下提供82％-99％的纯产品。暴露时间为180-240分钟。发现施加在磁性材料上的磁力的影响提高了微球的催化活性。催化剂可以通过简单的离心容易地分离，这可以重复使用至少15次，无活性损失。

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来源
《Canadian Journal of Chemistry》 |2019年第3期|共6页
作者
Sharma Priyanka; Vallabhapurapu Srinivasu V.; Ho Wei H.; Hemmaragala Nanjundaswamy M.;
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作者单位

Univ South Africa Coll Sci Engn &

Technol Dept Phys ZA-1709 Johannesburg South Africa;

Univ South Africa Coll Sci Engn &

Technol Dept Phys ZA-1709 Johannesburg South Africa;

Univ South Africa Coll Sci Engn &

Technol Dept Phys ZA-1709 Johannesburg South Africa;

Univ South Africa Coll Sci Engn &

Technol Dept Phys ZA-1709 Johannesburg South Africa;

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原文格式 PDF
正文语种 eng
中图分类化学;
关键词
1; 2; 3-triazolines; magnetic field; novel reactor; magnetic microspheres;

机译：1;2;3三唑孔;磁场;新型反应器;磁性微球;

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1. Novel synthesis of 1,5-disubstituted-1,2,3-triazolines catalysed by Zepto magnetic microspheres under the influence of a rotating magnetic field [J] . Sharma Priyanka, Vallabhapurapu Srinivasu V., Ho Wei H., Canadian Journal of Chemistry . 2019,第3期

机译：在旋转磁场的影响下，Zepto磁性微球催化的1,5-二取代-1,2,3-三唑的新合成
2. An Organocatalytic Regiospecific Synthesis of 1,5-Disubstituted 4-Thio-1,2,3-triazoles and 1,5-Disubstituted 1,2,3-Triazoles [J] . Ramachary Dhevalapally B., Krishna Patoju M., Gujral Jagjeet, Chemistry: A European journal . 2015,第47期

机译：1,5-二取代的4-硫代1,2,3-三唑和1,5-二取代的1,2,3-三唑的有机催化区域特异性合成
3. An Organocatalytic Regiospecific Synthesis of 1,5-Disubstituted 4-Thio-1,2,3-triazoles and 1,5-Disubstituted 1,2,3-Triazoles [J] . Ramachary Dhevalapally B., Krishna Patoju M., Gujral Jagjeet, Chemistry: A European journal . 2015,第47期

机译：1,5-二取代的4-硫代1,2,3-三唑和1,5-二取代的1,2,3-三唑的有机催化区域特异性合成
4. Synthesis of Carbon-14 Analogue of 1,5 Diaryl-5-~14C-l,2,3-triazoline and Triazoles [C] . Hojatollah Matloubi, Nader Saemian, Gholamhossein Shirvani, International Conference on Isotopes (5ICI) . 2005

机译：1,5二芳基-5- 〜14c -L，2,3-三唑啉和三唑的碳-14类似物的合成
5. Investigation of the Three-Dimensional Structure of a Rotating Magnetic Field Driven Field-Reversed Configuration using Internal Magnetic Field Measurements. [D] . Velas, Katherine M. 2013

机译：使用内部磁场测量研究旋转磁场驱动的磁场反向构造的三维结构。
6. Chiral magnetic microspheres purified by centrifugal field flow fractionation and microspheres magnetic chiral chromatography for benzoin racemate separation [O] . Ailin Tian, Jing Qi, Yating Liu, -1

机译：离心场流分离纯化手性磁性微球和手性安息香精分离用微球磁性手性色谱法
7. Preparation, characterization and application of MgFe2O4/Cu nanocomposite as a new magnetic catalyst for one-pot regioselective synthesis of β-thiol-1,4-disubstituted-1,2,3-triazoles [O] . Ronak Eisavi, Kazhal Naseri 2021

机译：MgFe2O4 / Cu纳米复合材料的制备，表征和施加作为β-硫醇-1,4-二取代1,2,3-三唑的单盆区域合成新磁催化剂
8. The Calculation of the Shape of an Electric Arc Discharge Rotating in an Annular Gap under the Influence of a Non-Uniform LongitudinalnApplied Magnetic Field [R] . J. M. Shaw 1966

机译：非均匀纵向磁场影响下环形电弧放电形状的计算

Novel synthesis of 1,5-disubstituted-1,2,3-triazolines catalysed by Zepto magnetic microspheres under the influence of a rotating magnetic field

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