Carbamoylimidazolium and thiocarbamoylimidazolium salts: novel reagents for the synthesis of ureas, thioureas, carbamates, thiocarbamates and amides
作者:Justyna A. Grzyb、Ming Shen、Chiaki Yoshina-Ishii、W. Chi、R.Stanley Brown、Robert A. Batey
DOI:10.1016/j.tet.2005.05.056
日期:2005.7
Carbamoylimidazolium salts act as efficient N,N-disubstituted carbamoylating reagents. These salts are readily prepared by the sequential treatment of secondary amines with N,N′-carbonyldiimidazole (CDI) and iodomethane. The carbamoylimidazolium salts are more efficient carbamoyl transfer reagents than the intermediate carbamoylimidazoles, as a result of the ‘imidazolium’ effect. Kinetic studies on
Ni-Catalyzed Synthesis of Thiocarboxylic Acid Derivatives
作者:John J. Monteith、Katerina Scotchburn、L. Reginald Mills、Sophie A. L. Rousseaux
DOI:10.1021/acs.orglett.1c04074
日期:2022.1.21
cross-coupling of readily accessible O-alkyl xanthate esters or thiocarbonyl imidazolides and organozinc reagents for the synthesis of thiocarboxylic acidderivatives has been developed. This method benefits from a fast reaction time, mild reaction conditions, and ease of starting material synthesis. The use of transition-metal catalysis to access a diverse range of thiocarbonyl-containing compounds provides
Efficient Synthesis of Benzothiazinone Analogues with Activity against Intracellular
<i>Mycobacterium tuberculosis</i>
作者:Adrian Richter、Gagandeep Narula、Ines Rudolph、Rüdiger W. Seidel、Christoph Wagner、Yossef Av‐Gay、Peter Imming
DOI:10.1002/cmdc.202100733
日期:2022.3.18
We report the synthesis of antitubercular 8-nitrobenzothiazinones and their antimycobacterial characterization. A synthesis using thiourea intermediates was established, and 35 analogues were prepared. Their antimycobacterial potential was investigated againstMycobacteriumtuberculosis: minimal inhibitory concentrations (MICs) of all derivatives were determined in broth and in a macrophage infection
我们报道了抗结核药物 8-硝基苯并噻嗪酮的合成及其抗分枝杆菌特性。建立了使用硫脲中间体的合成方法,并制备了 35 种类似物。研究了它们针对结核分枝杆菌的抗分枝杆菌潜力:在肉汤和巨噬细胞感染模型中测定了所有衍生物的最低抑制浓度 (MIC)。可以描述和表征 MIC 为 <50 nM 的化合物。