Discovery of Quinazolin-4(3<i>H</i>)-ones as NLRP3 Inflammasome Inhibitors: Computational Design, Metal-Free Synthesis, and in Vitro Biological Evaluation
作者:Mohd Abdullaha、Shabber Mohammed、Mehboob Ali、Ajay Kumar、Ram A. Vishwakarma、Sandip B. Bharate
DOI:10.1021/acs.joc.9b00138
日期:2019.5.3
NLRP3inflammasome is an important therapeutic target for a number of human diseases. Herein, computationally designed series of quinazolin-4(3H)-ones were synthesized using iodine-catalyzed coupling of arylalkynes (or styrenes) with O-aminobenzamides. The key event in this transformation involves the oxidative cleavage of the C–C triple/double bond and the release of formaldehyde. The reaction relies
Linear-Organic-Polymer-Supported Iridium Complex as a Recyclable Auto-Tandem Catalyst for the Synthesis of Quinazolinones via Selective Hydration/Acceptorless Dehydrogenative Coupling from <i>o</i>-Aminobenzonitriles
作者:Shushu Hao、Jiazhi Yang、Peng Liu、Jing Xu、Chenchen Yang、Feng Li
DOI:10.1021/acs.orglett.1c00475
日期:2021.4.2
coordinative immobilization of [Cp*IrCl2]2 on poly(4-vinylpyridine), was proven to be an efficient heterogeneous autotandem catalyst for synthesizing quinazolinones via selective hydration/acceptorless dehydrogenative coupling from o-aminobenzonitriles. Furthermore, the synthesized catalyst was recycled five times without an obvious decrease in the catalytic activity.
通过将[Cp * IrCl 2 ] 2配位固定在聚(4-乙烯基吡啶)上设计和合成的线性有机聚合物负载的铱络合物Cp * Ir @ P4VP被证明是一种有效的异质串联催化剂通过邻氨基苄腈的选择性水合/无受体脱氢偶联合成喹唑啉酮。此外,将合成的催化剂循环使用五次,而催化活性没有明显降低。
Electro-oxidative cyclization: access to quinazolinones <i>via</i> K<sub>2</sub>S<sub>2</sub>O<sub>8</sub> without transition metal catalyst and base
作者:Yongzhi Hu、Huiqing Hou、Ling Yu、Sunying Zhou、Xianghua Wu、Weiming Sun、Fang Ke
DOI:10.1039/d1ra05092c
日期:——
A K2S2O8-promoted oxidative tandem cyclization of primary alcohols with 2-aminobenzamides to synthesize quinazolinones was successfully achieved under undivided electrolytic conditions without a transition metal and base. The key feature of this protocol is the utilization of K2S2O8 as an inexpensive and easy-to-handle radical surrogate that can effectively promote the reaction via a simple procedure
AK 2 S 2 O 8促进了伯醇与2-氨基苯甲酰胺的氧化串联环化以合成喹唑啉酮,在没有过渡金属和碱的不分电解条件下成功实现。该协议的主要特点是利用 K 2 S 2 O 8作为一种廉价且易于处理的自由基替代物,可以通过简单的程序有效地促进反应,从而通过形成氮杂环在恒定电流下以一锅法在室温下直接氧化环化。由于使用了连续流动的电化学装置,这种绿色、温和、实用的电合成具有高效率和优异的官能团耐受性,并且易于放大。
Electrochemical synthesis of quinazolinone <i>via</i> I<sub>2</sub>-catalyzed tandem oxidation in aqueous solution
作者:Huiqing Hou、Xinhua Ma、Yingying Lin、Jin Lin、Weiming Sun、Lei Wang、Xiuzhi Xu、Fang Ke
DOI:10.1039/d1ra02706a
日期:——
green and sustainable chemistry for their synthesis. Herein, using I2 in coordination with electrochemical synthesis induced a C–H oxidation reaction which is reported when using water as the environmentally friendly solvent to access a broad range of quinazolinones at roomtemperature. The reaction mechanism strongly showed that I2 cooperates electrochemically promoted the oxidation of alcohols, then
开发在水性介质中使用生物相容性催化剂合成喹唑啉酮的方案将有助于解决使用绿色和可持续化学合成它们的困难。在此,使用 I 2与电化学合成配合会引起 C-H 氧化反应,据报道,当使用水作为环境友好溶剂在室温下获得广泛的喹唑啉酮时。反应机理有力地表明,I 2协同电化学促进醇的氧化,然后有效地将酰胺环化为各种喹唑啉酮。
Pd-Catalyzed Benzylic C–H Amidation with Benzyl Alcohols in Water: A Strategy To Construct Quinazolinones
synthesis of 4-phenylquinazolinones via a palladium-catalyzed domino reaction of o-aminobenzamides with benzyl alcohols is developed. This protocol involves N-benzylation, benzylic C–Hamidation, and dehydrogenation in water, which may play an important role in the smooth generation of the (η3-benzyl)palladium species by activation of the hydroxyl group of the benzyl alcohol.