BF<sub>3</sub>-grafted Fe<sub>3</sub>O<sub>4</sub>@Sucrose nanoparticles as a highly-efficient acid catalyst for syntheses of Dihydroquinazolinones (DHQZs) and Bis 3-Indolyl Methanes (BIMs)
core and grafting of boron trifluoride (BF3) onto the new surface. The catalytic activity of these nanoparticles was tested in syntheses of Dihydroquinazolinones (DHQZs) and Bis (3‐Indolyl) Methanes (BIMs) as two fruitful pharmaceutical structures. Acidic capacity, FT‐IR, XRD, VSM, TGA and SEM–EDX tests are carried out on such novel nanoparticles (NPs). Catalyst has shown more acidic capacity per one
当前的论文表示将蔗糖固定在Fe 3 O 4核上并将三氟化硼(BF 3)接枝到新表面上。在二氢喹唑啉酮(DHQZs)和双(3-吲哚基)甲烷(BIM)的合成中,作为两种卓有成效的药物结构,测试了这些纳米颗粒的催化活性。对这种新型纳米颗粒(NP)进行了酸性容量,FT-IR,XRD,VSM,TGA和SEM-EDX测试。与以前报道的磺化同系物相比,催化剂每1克NP的酸容量更高。
An ionic liquid catalyzed reusable protocol for one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one under mild conditions
protocol has been developed for the synthesis of 2,3-dihydroquinazolinone compounds from anthranilamide and aldehydes or ketones via ionicliquidcatalyzed cyclization reaction. The reaction features high efficiency, shorter reaction duration, mild reaction conditions and inexpensive reagents. The catalyst was recovered and reused. The recyclability of ionicliquid resulted in excellent yields of products
The Remarkable Cooperative Effect of a Brønsted-Acidic Ionic Liquid in the Cyclization of 2-Aminobenzamides with Ketones
作者:Sudarshan Das、Sougata Santra、Sourav Jana、Grigory V. Zyryanov、Adinath Majee、Alakananda Hajra
DOI:10.1002/ejoc.201700966
日期:2017.9.8
lower E factor. The catalyst can be reused for five consecutive runs without any significant loss of catalytic activities. This method produced only water as the byproduct and represents a green synthetic protocol. Clean reaction, non-chromatographic purification technique, easily accessible reactants, metal and solvent-free and environmentally friendly reaction conditions are the notable advantages
Deep eutectic solvent mediated synthesis of quinazolinones and dihydroquinazolinones: synthesis of natural products and drugs
作者:Suman Kr Ghosh、Rajagopal Nagarajan
DOI:10.1039/c6ra00855k
日期:——
A mild and greener protocol was developed to synthesize substituted quinazolinones and dihydroquinazolinonesviadeep eutectic solvent mediated cyclization with aliphatic, aromatic, and heteroaromatic aldehydes in good to excellent yields.
Heterocyclic reaction inducted by Brønsted–Lewis dual acidic Hf-MOF under microwave irradiation
作者:Linh Ho Thuy Nguyen、Trang Thi Thu Nguyen、Minh-Huy Dinh Dang、Phuong Hoang Tran、Tan Le Hoang Doan
DOI:10.1016/j.mcat.2020.111291
日期:2021.1
Use of green chemistry and alternative strategies has been explored to prepare diverse organic derivatives. The combination between heterogeneous catalyst, environmentally benign reaction and high-yielding methods is gaining momentum. Herein, a defective 6-connected Hf-MOF, named Hf-BTC, was efficiently synthesized and characterized for the heterogeneous catalysis undermicrowaveirradiation. The MOF