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...
A one-pot I2-mediated annulation reaction of substrates containing diamino groups and aldehydes has been developed viaoxidativeC–Nbondformation. This general and environmentally benign synthetic approach provides facile access to a variety of 1,3-diazaheterocyclic compounds, including quinazolinones, benzimidazoles, and cyclic amidines.
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。