Preparation and characterization of MNPs–PhSO3H as a heterogeneous catalyst for the synthesis of benzo[b]pyran and pyrano[3,2-c]chromenes
作者:Homayoun Faroughi Niya、Nourallah Hazeri、Mahboobeh Rezaie Kahkhaie、Malek Taher Maghsoodlou
DOI:10.1007/s11164-019-04056-z
日期:2020.3
was fully characterized using FT-IR, XRD, TGA, VSM, SEM, and TEM. The results show that the synthesis of magnetic nanocatalyst has been successful with a range of 2–20 nm in size. Finally, the catalytic activity of this superparamagnetic nanocatalyst was explored for the synthesis of tetrahydrobenzo[b]pyran and 2-amino-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile derivatives. The synthesized
在这项研究中,已经报道了使用三(羟甲基)氨基甲烷和1,2-二氯乙烷将磺胺酸加载到磁铁矿Fe 3 O 4纳米颗粒表面的有效而新颖的方法。接下来,使用FT-IR,XRD,TGA,VSM,SEM和TEM对合成的纳米催化剂进行了全面表征。结果表明,磁性纳米催化剂的合成已成功完成,粒径范围为2–20 nm。最后,探索了该超顺磁性纳米催化剂的催化活性,用于合成四氢苯并[ b ]吡喃和2-氨基-5-氧代-4,5-二氢吡喃[3,2- c] chromene-3-carbontritrile衍生物。合成的纳米催化剂具有无毒,反应时间短,后处理容易,在温和的反应条件下反应曲线更干净等优点。