Convenient synthesis of 2,3-disubstituted quinazolin-4(3H)-ones and 2-styryl-3-substituted quinazolin-4(3H)-ones: applications towards the synthesis of drugs
作者:Dinesh Kumar、Pradeep S. Jadhavar、Manesh Nautiyal、Himanshu Sharma、Prahlad K. Meena、Legesse Adane、Sahaj Pancholia、Asit K. Chakraborti
DOI:10.1039/c5ra03888j
日期:——
Simple, convenient, and green synthetic protocols have been developed for the one pot synthesis of 2,3-disubstituted quinazolin-4(3H)-ones and 2-styryl-3-substituted quinazolin-4(3H)-ones under catalyst and solvent free conditions.
transformations are based on the fact that DMF can serve as a reaction solvent and one carbon synthon for the construction of heterocyclic rings. Moreover, this protocol features base-free and Brønsted acid free environmentally benign conditions with broad synthetic scope. A good scalability is demonstrated.
Green Synthesis of Quinazolinone Derivatives Catalyzed by Iodine in Ionic Liquid
作者:Shu-Liang Wang、Ke Yang、Chang-Sheng Yao、Xiang-Shan Wang
DOI:10.1080/00397911.2010.524340
日期:2012.2.1
Abstract A series of quinazolinone derivatives were synthesized by the reaction of 2-aminobenzamides and triethyl orthoformate or triphosgene in ionicliquid of [BMIm]BF4 at 80 °C catalyzed by iodine in good yields. Compared to other methods, this new procedure has the advantages of mild reaction conditions, good yields, operational simplicity, and environmentally friendly procedure. GRAPHICAL ABSTRACT
Pd/Fe<sub>3</sub>O<sub>4</sub> supported on nitrogen-doped reduced graphene oxide for room-temperature isocyanide insertion reactions
作者:Karandeep Singh、Ajay K. Singh、Devendra Singh、Rakhi Singh、Siddharth Sharma
DOI:10.1039/c5cy01973g
日期:——
graphene oxide (N-rGO) catalyst was developed to carry out the synthesis of quinazolinones and phenanthridines under extremely mild conditions through isocyanideinsertion cascades. The supported Pd/Fe3O4 nanoparticles could be easily recovered from the reaction mixture and reused several times without any loss in catalytic activity.
开发了一种多功能的Pd / Fe 3 O 4负载在N掺杂的还原氧化石墨烯(N-rGO)催化剂上,以在极温和的条件下通过异氰酸酯插入级联反应进行喹唑啉酮和菲啶的合成。负载的Pd / Fe 3 O 4纳米颗粒可以很容易地从反应混合物中回收并重复使用数次,而不会降低催化活性。
tert-Butyl Hydroperoxide Promoted the Reaction of Quinazoline-3-oxides with Primary Amines Affording Quinazolin-4(3<i>H</i>)-ones
作者:Jin Luo、Juelin Wan、Lianlian Wu、Lingyun Yang、Tao Wang
DOI:10.1021/acs.joc.2c00898
日期:2022.8.5
synthesis of quinazolin-4(3H)-ones via the reaction of quinazoline-3-oxides with primary amines is described. This approach is demonstrated to be applicable for a broad range of substrates and proceeds efficiently under metal-free and mild reaction conditions employing easily available tert-butyl hydroperoxide as the oxidant. Remarkably, 3-(2-(1H-indol-3-yl) ethyl)quinazolin-4(3H)-one 3w, which was conveniently
介绍了一种通过 quinazolin-3-氧化物与伯胺反应合成 quinazolin-4(3 H )-ones 的有效且简便的方法。这种方法被证明适用于广泛的底物,并且在使用容易获得的叔丁基过氧化氢作为氧化剂的无金属和温和的反应条件下有效地进行。值得注意的是,3-(2-(1 H -indol-3-yl) ethyl)quinazolin-4(3 H )-one 3w是通过该方法方便地以 70% 的收率获得的,是合成生物活性吴茱萸碱和鲁坦平。