[EN] 6,6-BICYCLIC RING SUBSTITUTED HETEROBICYCLIC PROTEIN KINASE INHIBITORS [FR] INHIBITEURS DE LA PROTEINE KINASE HETEROBICYCLIQUES A SUBSTITUTION DE NOYAU BICYCLIQUE 6,6
Iron nitrate/TEMPO-catalyzed aerobic oxidative synthesis of quinazolinones from alcohols and 2-aminobenzamides with air as the oxidant
作者:Yongke Hu、Lei Chen、Bindong Li
DOI:10.1039/c6ra12164k
日期:——
A highly efficient, Iron nitrate/TEMPO-catalyzed approach for the synthesis of quinazolinones has been achieved via a one-pot, tandem aerobic oxidative cyclization of primary alcohols with 2-aminobenzamides. This practical reaction tolerates...
Copper-Catalyzed One-Pot Synthesis of Quinazolinones from 2-Nitrobenzaldehydes with Aldehydes: Application toward the Synthesis of Natural Products
作者:Subrata Sahoo、Shantanu Pal
DOI:10.1021/acs.joc.1c02343
日期:2021.12.17
A novel, efficient, and atom-economical approach for the construction of quinazolinones from 2-nitrobenzaldehydes has been unveiled via copper-catalyzed nitrile formation, hydrolysis, and reduction in onepot for the first time. In this reaction, urea is used as a source of nitrogen for nitrile formation, hydrazine hydrate is used for both the reduction of the nitro group and the hydrolysis of nitrile
首次通过铜催化的腈形成、水解和还原在一个锅中揭示了一种从 2-硝基苯甲醛构建喹唑啉酮的新型、高效和原子经济的方法。在该反应中,尿素用作生成腈的氮源,水合肼用于硝基的还原和腈的水解,大气中的氧气用作唯一的氧化剂。该方法描绘了具有良好官能团耐受性的宽底物范围。此外,该方法还用于合成裂殖菌素、色胺菊酯、phaitanthrin-A、phaitanthrin-B和8 H-喹唑啉[4,3 - b ]quinazolin-8-one。
Iron(III) Chloride-Catalyzed Decarboxylative-Deaminative Functionalization of Phenylglycine: A Tandem Synthesis of Quinazolinones and Benzimidazoles
present reaction conditions. In this tandem approach, involvement of transferhydrogenation of the nitro functionality with in situ generated ammonia, imination, nitrile hydration to amide and oxidative cyclization sequences have been established. The process avoids the use of an external hydrogen source, costly catalysts as well as the isolation of amine and amide intermediates.
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。
Quinazolinones from <i>o</i>
-Aminobenzonitriles by One-Pot Sequential Selective Hydration/Condensation/Acceptorless Dehydrogenation Catalyzed by an Iridium Complex
作者:Wei Zhao、Pengcheng Liu、Feng Li
DOI:10.1002/cctc.201501385
日期:2016.4.20
A new strategy for the direct synthesis of quinazolinones from o‐aminobenzonitriles was proposed and accomplished. In the presence of [Cp*IrCl2]2 (Cp*=pentamethylcyclopentadienyl), a variety of desirable products was obtained easily through the one‐pot sequential selective hydration/condensation/acceptorless dehydrogenation. This protocol is highly attractive because it uses readily available starting