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首页> 外文期刊>Polycyclic Aromatic Compounds: The Journal of International Society for Polycyclic Aromatic Compounds >One-Pot, Sequential Four-Component Synthesis of Benzo[a]chromeno[2,3-c]phenazine Derivatives Using SiO2-SO3H as an Efficient and Recoverable Catalyst Under Conventional Heating and Microwave Irradiation
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One-Pot, Sequential Four-Component Synthesis of Benzo[a]chromeno[2,3-c]phenazine Derivatives Using SiO2-SO3H as an Efficient and Recoverable Catalyst Under Conventional Heating and Microwave Irradiation

机译:使用SiO2-SO3H在常规加热和微波辐射下,使用SiO2-SO3H作为一种有效且可回收的催化剂,苯并[A] Chromeno [2,3-C]吩嗪衍生物的单壶。

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摘要

Silica sulfuric acid (SiO2-SO3H) has been used as an effective and reusable solid catalyst for the one-pot, two-step, four-component microwave-assisted synthesis of benzo[a]chromeno[2,3-c]phenazine derivatives by the condensation reaction of 2-hydroxynaphthalene-1,4-dione, o-phenylenediamine, aldehydes, and cyclic 1,3-dicarbonyl compounds. This new procedure has a number of advantages such as: high yields, very short reaction time, operational simplicity, simple work-up procedures and avoidance of hazardous or toxic catalysts, and organic solvents and is devoid of inessential derivatization and generation of hazardous substances. Moreover, the catalyst shows high thermal stability and can be recovered and reused without loss of reactivity.
机译:二氧化硅硫酸(SiO 2-SO3H)已被用作一锅,两步,四组分微波辅助合成苯并[A] Chromeno [2,3-C]苯脲衍生物的有效和可重复使用的固体催化剂 通过2-羟基萘-1,4-二酮,O-苯二胺,醛和环状1,3-二羰基化合物的缩合反应。 这种新程序具有许多优点,如:高产率,反应时间短,操作简单,操作简单,简单的后处理程序和避免危险或有毒催化剂,以及有机溶剂,并且具有非态度衍生化和产生有害物质的产生。 此外,催化剂显示出高热稳定性,并且可以在不损失反应性的情况下回收并重复使用。

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