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。
Facile method for the synthesis of 2,3-dihydroquinazolin-4(1H)-ones catalyzed by SiO2–H3PW12O40 in water
12-tungstophosphoric acid supported on silica gel (PW/SiO2) exhibits excellent activity in the synthesis of 2,3-dihydroquinazolin-4(1 H )-ones by cyclocondensation reaction of 2-aminobenzamide with carbonylcompounds in water under reflux conditions. The desired products have been obtained in short reaction times in high yields. Our method has been successfully applied for both aldehydes and ketones (aromatic and aliphatic)
硅胶上负载的12-钨磷酸(PW / SiO 2)在回流条件下通过2-氨基苯甲酰胺与羰基化合物在水中的环缩合反应,在合成2,3-二氢喹唑啉-4(1 H )-酮中显示出优异的活性。 。在短的反应时间内以高收率获得了所需的产物。我们的方法已成功应用于醛和酮(芳族和脂族)。与现有方法相比,该方法的主要优点是易于回收和可重复使用的催化剂,易于处理以及避免使用有害的有机溶剂。
Synthesis and Characterization of Pd(0)-SMT-MCM-41 and its Application in the Amination of Aryl Halides and Synthesis of 2,3-Dihydroquinazolin-4(1H)-Ones as Efficient and Recyclable Nanostructural Catalyst
system for amination of various aryl halides and the one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives. The present methodology offers several advantages such as simplicity of procedure, easy isolation of the products and reused for several consecutive runs without significant loss of their catalytic efficiency. The characteristic structural features of this new catalyst was determined by
Synthesis of 2,3‐dihydroquinazolin‐4(1
<i>H</i>
)‐ones in the presence of Fe
<sub>3</sub>
O
<sub>4</sub>
@nano‐cellulose–OPO
<sub>3</sub>
H as a bio‐based magnetic nanocatalyst
作者:Bi Bi Fatemeh Mirjalili、Zahra Zaghaghi、Aazam Monfared
DOI:10.1002/jccs.201900264
日期:2020.2
In this research, we have used Fe3O4@nano‐cellulose–OPO3H as magneticbio‐basednanocatalyst for the synthesis of 2,3‐dihydroquinazolin‐4(1H)‐ones via condensation of 2‐aminobenzamide and different aldehydes. The major advantages of the present methodology are good yields, ecofriendly catalyst, and easy workup.
在这项研究中,我们使用Fe 3 O 4 @纳米纤维素–OPO 3 H作为磁性生物基纳米催化剂,通过2-氨基苯甲酰胺与不同氨基的缩合反应合成2,3-二氢喹唑啉-4(1 H)-ones。醛。本方法的主要优点是产率高,环境友好的催化剂和后处理容易。
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