An ultrasound assisted cyclocondensation reaction for the efficient synthesis of [1]benzopyranopyrido[d]pyrimidines using porous graphene/MoO3,Applied Organometallic Chemistry

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An ultrasound assisted cyclocondensation reaction for the efficient synthesis of [1]benzopyranopyrido[d]pyrimidines using porous graphene/MoO3
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-11-03 , DOI: 10.1002/aoc.6028
Shahrzad Abdolmohammadi ₁ , Maryam Afsharpour ₂

Affiliation

In this paper, we report a feasible protocol for the preparation of [1]benzopyranopyrido[d]pyrimidines via expeditious sonochemical route. The reaction efficiency was evaluated by influence of several parameters including sonication power, sonication time, different solvents, and using porous graphene/MoO₃ nanocomposite as catalyst, for the first time. The effect of the ultrasonication comparing with the conventional heating on the synthesis of the titled compounds shows that the ultrasonic irradiation is required to rich the cyclized products. The structural properties of porous graphene/MoO₃ nanocomposite were determined by Fourier transform infrared spectroscopy (FT‐IR), powder X‐ray diffractometry (XRD), scanning electron microscope (SEM), Raman spectroscopy, and also by TGA analysis. Confirmation of the structures of compounds 4a–4h were also established with IR, ¹H NMR, and ¹³C NMR spectroscopic data and also by elemental analyses.

中文翻译：

超声辅助环缩合反应利用多孔石墨烯/ MoO3有效合成[1]苯并吡喃并吡喃并[d]嘧啶

在本文中，我们报告了通过快速声化学途径制备[1]苯并吡喃并吡喃并[ d ]嘧啶的可行方案。通过超声处理功率，超声处理时间，不同溶剂等多种参数的影响，并首次使用多孔石墨烯/ MoO ₃纳米复合材料作为催化剂，评价了反应效率。与常规加热相比，超声处理对标题化合物的合成的影响表明，需要超声辐照来富集环化产物。多孔石墨烯/ MoO ₃的结构性质通过傅立叶变换红外光谱（FT-IR），粉末X射线衍射法（XRD），扫描电子显微镜（SEM），拉曼光谱以及TGA分析来确定纳米复合材料。还通过IR，¹ H NMR和¹³ C NMR光谱数据以及元素分析确定了化合物4a - 4h的结构。

更新日期：2020-12-22

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