Abstract

Hybrid structures containing organic-inorganic porous materials are of great interest as green, heterogeneous, and recyclable catalysts. In this study, a novel organic-inorganic hybrid material (Zeolite HY@DETA) via the surface-functionalization of the Zeolite HY was prepared. The structure of hybrid material was characterized using the Fourier-transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), Energy-dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA), and Brunauer–Emmett–Teller (BET) surface area analysis. Subsequently, the catalytic activity of this novel hybrid material was considered in the one-pot three-component synthesis of 3-amino-1-aryl-5,10-dioxo-1H-pyrazolo[1,2-b]phthalazine-2-carbonitrile and some bis phthalazine-dione derivatives under green and environmentally benign conditions. The products were synthesized in excellent yields within a short reaction time and identified using elemental analysis, FT-IR, ¹H NMR, and ¹³C NMR spectroscopies. This protocol avoids the use of harmful catalysts, toxic solvents, and harsh reaction conditions. Besides, the catalyst could be recycled for five reaction runs with a slight loss of catalytic activity.

摘要

包含有机-无机多孔材料的混合结构作为绿色、多相和可回收的催化剂引起了人们的极大兴趣。在这项研究中，通过对沸石 HY 进行表面功能化制备了一种新型的有机-无机杂化材料（沸石 HY@DETA）。使用傅里叶变换红外光谱 (FT-IR)、场发射扫描电子显微镜 (FE-SEM)、能量色散 X 射线光谱 (EDS)、热重分析 (TGA) 和布鲁瑙尔对混合材料的结构进行表征–Emmett–Teller (BET) 表面积分析。随后，这种新型杂化材料的催化活性被用于一锅三组分合成 3-amino-1-aryl-5,10-dioxo-1 H - pyrazolo[1,2- b]酞嗪-2-腈和一些双酞嗪-二酮衍生物在绿色和环境友好的条件下。产物在较短的反应时间内以极好的收率合成，并使用元素分析、FT-IR、¹ H NMR 和¹³ C NMR 光谱进行鉴定。该协议避免使用有害催化剂、有毒溶剂和苛刻的反应条件。此外，催化剂可以循环使用五次反应运行，催化活性略有损失。