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。
Expeditious synthesis of 2,3-dihydroquinazolin-4(1<i>H</i>)-ones in aqueous medium using thiamine hydrochloride (VB<sub>1</sub>) as a mild, efficient, and reusable organocatalyst
ABSTRACT A simple and straightforward synthesis of 2,3-dihydroquinazolin-4(1H)-ones is developed by reacting anthranilamide with various aldehydes or ketones under mild reaction conditions, using thiamine hydrochloride as a cost-effective, readily available, and green catalyst in water. Simple purification process, high yields within short reaction time, wide substrate scope, operational simplicity
Probing Carbocatalytic Activity of Carbon Nanodots for the Synthesis of Biologically Active Dihydro/Spiro/Glyco Quinazolinones and Aza-Michael Adducts
作者:Biju Majumdar、Sonam Mandani、Tamalika Bhattacharya、Daisy Sarma、Tridib K. Sarma
DOI:10.1021/acs.joc.6b02914
日期:2017.2.17
the fluorescent carbon dots as an effective and recyclable carbocatalyst for the generation of carbon–heteroatom bond leading to quinazolinone derivatives and aza-Michael adducts under mild reaction conditions. The results establish this nanoscale form of carbon as an alternative carbocatalyst for important acid catalyzed organic transformations. The mild surface acidity of carbon dots imparted by
Synthesis of 2-aryl-2,3-dihydroquinazoline-4(1H)-ones is described by using new and novel heterogeneous catalyst, Indion Ina 225H resin. Anthranilamide was reacted with a series of aromatic aldehydes in presence of resin to afford various 2-aryl substituted 2,3-dihydroquinazoline-4(1H)-ones. The resin employed in these reactions can be recovered and reused.
使用新型异相催化剂 Indion Ina 225H 树脂合成了 2-芳基-2,3-二氢喹唑啉-4(1H)-酮。在树脂存在下,蒽酰胺与一系列芳香醛发生反应,生成各种 2-芳基取代的 2,3-二氢喹唑啉-4(1H)-酮。在这些反应中使用的树脂可以回收和重复使用。
Application of SBA-Pr-SO3H in the synthesis of 2,3-dihydroquinazoline-4(1H)-ones: characterization, UV–Vis investigations and DFT studies
An efficientone-potsynthesis of 2,3-dihydroquinazoline-4(1H)-one derivatives 4a–l is described using SBA-Pr-SO3H as a heterogeneous acid catalyst. The present methodology resulted in various derivatives of 2,3-dihydroquinazoline-4(1H)-one in good yield via a three-component reaction of isatoic anhydride, aldehydes and ammonium acetate. SBA-Pr-SO3H played a significant role as an efficient mesoporous