Efficient synthesis of 2,3-disubstituted-2,3-dihydroquinazolin-4(1H)-ones catalyzed by dodecylbenzenesulfonic acid in aqueous media under ultrasound irradiation
作者:Bao-Hua Chen、Ji-Tai Li、Guo-Feng Chen
DOI:10.1016/j.ultsonch.2014.08.024
日期:2015.3
Synthesis of 2,3-disubstituted-2,3-dihydroquinazolin-4(1H)-one derivatives catalyzed by dodecylbenzenesulfonic acid was carried out in 80-92% yields at 40-42 °C within 1-2 h in aqueous media via one-pot three-component condensation of isatoic anhydride, aromatic aldehyde and amine under ultrasound irradiation. Convenient work-up procedures, mild reaction conditions, avoiding the use of organic solvents
Para-Aminobenzoic acid grafted on silica-coated magnetic nanoparticles: a highly efficient and synergistic organocatalyst for on-water synthesis of 2,3-dihydroquinazolin-4(1H)-ones
作者:Hamidreza FaniMoghadam、Mohammad G. Dekamin、Negin Rostami
DOI:10.1007/s11164-022-04736-3
日期:2022.7
nanocomposite was used as a novel, highly efficient and synergistic recoverable organocatalyst for the synthesis of biologically active 2,3-disubstituted-2,3-dihydroquinazolin-4(1H)-one derivatives via on-water and one-pot three-component condensation of isatoic anhydride, aromatic aldehydes and aromatic or aliphatic amines under reflux conditions. Transition metal-free process, the use of a naturally
在本研究中,制备了新的对氨基苯甲酸(PABA)接枝在二氧化硅包覆的磁性纳米粒子(Fe 3 O 4 @SiO 2 @Pr-PABA)上,并使用傅里叶变换红外(FT-IR)正确确认了其结构。 ) 光谱学、粉末 X 射线衍射 (XRD)、振动样品磁力计 (VSM)、场发射扫描电子显微镜 (FESEM)、能量色散 X 射线探测器 (EDS)、透射电子显微镜 (TEM)、热重分析 (TGA) )、N 2吸附-解吸技术 (BET) 和原子力显微镜 (AFM)。Fe 3 O 4 @SiO 2@Pr-PABA 纳米复合材料被用作一种新型、高效和协同的可回收有机催化剂,用于通过水和单-水合成具有生物活性的 2,3-二取代-2,3-二氢喹唑啉-4(1 H )-one 衍生物回流条件下,靛红酸酐、芳香醛和芳香胺或脂肪胺的锅三组分缩合反应。无过渡金属工艺、使用天然存在的组分和催化剂以及溶剂的环保性能、成本效益、催
Synthesis of 2-(hetero)arylquinazolinones in aqueous media
作者:Magyar Tímea、Ferenc Miklós、László Lázár、Ferenc Fülöp
DOI:10.24820/ark.5550190.p009.894
日期:——
thermal rearrangement in water. On the basis of the above findings, an eco-friendly method was applied to prepare quinazolin-4(1H)-one derivatives from anthranilamides and a number of (hetero)aryl aldehydes. Heating the aqueous mixture of starting compounds to 90 °C resulted in the products in 81–94% yields. All products precipitated from the reaction mixture and were isolated by simply filtration. No further