Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195.741, Iran.
Carbohydr Polym. 2017 Nov 1;175:409-416. doi: 10.1016/j.carbpol.2017.08.019. Epub 2017 Aug 5.
A cellulose-based nanobiocomposite decorated with FeO nanoparticles was prepared, characterized and applied as an easily recoverable and reusable green nanocatalyst in the synthesis of pyrano[2,3-d]pyrimidine derivatives in water at room temperature. The characterization was performed by using a variety of conventional analytical instruments such as Fourier transform infrared spectra (FT-IR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), vibrating sample magnetometer (VSM), thermal analysis (TGA/DTA) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) analyses. Two series of pyranopyrimidine and pyrazolopyranopyrimidines derivatives were synthesized by using the present cellulose-based nanocomposite. This protocol has valuable features like high yield of the products, short reaction times, mild conditions and easy work-up procedure. In addition, the catalyst can be prepared easily with cheap and green starting materials.
用 FeO 纳米粒子修饰的纤维素基纳米生物复合材料被制备、表征，并作为一种易于回收和重复使用的绿色纳米催化剂，在室温下水相中用于合成吡喃并[2,3-d]嘧啶衍生物。通过使用各种常规分析仪器，如傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜（FE-SEM）、透射电子显微镜（TEM）、能量色散 X 射线（EDX）、振动样品磁强计（VSM）、热分析（TGA/DTA）和电感耦合等离子体原子发射光谱（ICP-AES）分析对其进行了表征。使用本纤维素基纳米复合材料合成了两系列吡喃嘧啶和吡唑并吡喃嘧啶衍生物。该方法具有产物收率高、反应时间短、条件温和、后处理简单等优点。此外，催化剂可以用廉价且绿色的起始材料制备。
