Microwave-assisted one-pot synthesis of 2,3-disubstituted 3H-quinazolin-4-ones
作者:Ji-Feng Liu、Jaekyoo Lee、Audra M. Dalton、Grace Bi、Libing Yu、Carmen M. Baldino、Eric McElory、Matt Brown
DOI:10.1016/j.tetlet.2005.01.008
日期:2005.2
A practical synthesis of 2,3-disubstituted 3H-quinazolin-4-ones 1 with broad chemistry scope is described. The key step is the microwave promoted one-pot, two-step reaction sequence combining anthranilic acids, carboxylic acids, and amines providing efficient access to this important class of heterocycles. (C) 2005 Elsevier Ltd. All rights reserved.
Synthesis and in vitro antitubercular activity of pyridine analouges against the resistant Mycobacterium tuberculosis
Mycobacteriumtuberculosis (MTB) infection has become a growing health risk as multi-drug resistant strain (MDR-MTB) has emerged worldwide. The development of isoniazid (INH)-resistant M. tuberculosis strains dictate the need to re-design this old drug to create effective analogs against the resistant INH strains. Synthesis and the biological activity of isoniazid and pyridine derivatives were successfully
Construction of Benzoxazinones from Anilines and Their Derivatives
作者:Teng-Fei Zhao、Xiao-Li Xu、Wei-Yin Sun、Yi Lu
DOI:10.1021/acs.orglett.3c01511
日期:2023.7.14
Herein we report a strategy concerning Rh(III)-catalyzed direct ortho-C–H bond carbonylation to construct benzoxazinones fromanilines and their derivatives with high atom economy. Interestingly, the corresponding amides were generated in situ fromanilines when excess Ac2O was added and directed the following C–H bond carbonylation to form benzoxazinones. Extensive functional group tolerance can be