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...
Iron-catalyzed oxidative synthesis of N-heterocycles from primary alcohols
作者:Dan Zhao、Yu-Ren Zhou、Qi Shen、Jian-Xin Li
DOI:10.1039/c3ra46363j
日期:——
An iron-catalyzed one-pot one-step oxidative system has been successfully developed in the conversion of primary alcohols into nitrogen-containing heterocycles, such as quinazolinone, quinazoline and 3,4-dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide derivatives.
在伯醇转化为含氮杂环(如喹唑啉酮,喹唑啉和3,4-二氢-2 H -1,2,4-苯并噻二嗪)中,已成功开发出铁催化的一锅一步氧化系统。1,1-二氧化物衍生物。
Metal-free one-pot synthesis of 1,3-diazaheterocyclic compounds via I<sub>2</sub>-mediated oxidative C–N bond formation
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.
Bismuth-catalyzed synthesis of 2-substituted quinazolinones
作者:Sandeep R. Vemula、Dinesh Kumar、Gregory R. Cook
DOI:10.1016/j.tetlet.2018.09.014
日期:2018.10
bismuth-catalyzed oxidative condensation of aldehydes with 2-aminobenzamide under aerobic conditions is reported using ethanol as the solvent. Good to excellent isolated yields (68–95%) of the corresponding 2-substituted quinazolinones were obtained under mild reaction conditions with excellent functional group tolerance. The quinazolinones were further functionalized to afford N-allylated quinazolinones, 2-aminopyridine