Synthesis and Antimicrobial Evaluation of Some New Cyclooctanones and Cyclooctane-Based Heterocycles
作者:Korany A. Ali、Hanaa M. Hosni、Eman A. Ragab、Sherein I. Abd El-Moez
DOI:10.1002/ardp.201100186
日期:2012.3
intermediate for the synthesis of cyclooctanones and cyclooctane‐basedheterocycles with pyrazole, isoxazole, pyrimidine, pyrazolopyrimidine, triazolopyrimidine and imidazopyrimidine derivatives via its reactions with several nitrogen nucleophiles. The newly synthesized compounds were screened in vitro for their antimicrobial activity against pathogenic microorganisms (Listeria monocytogenes, methicillin‐resistant
作者:Andriy I. Frolov、Eugeniy N. Ostapchuk、Alexander E. Pashenko、Yaroslav O. Chuchvera、Eduard B. Rusanov、Dmitriy M. Volochnyuk、Sergey V. Ryabukhin
DOI:10.1021/acs.joc.1c00148
日期:2021.6.4
The convenient and scalable preparative approach for the two-step α-methylation of ketones is described. The optimized protocols for regioselective preparation of enaminones with further diastereoselective and functional groups tolerant hydrogenation to α-methylketones are developed. The scope and limitations of the proposed methodology are discussed. The advantages compared to known procedures are
描述了用于酮的两步 α-甲基化的方便且可扩展的制备方法。开发了区域选择性制备烯胺酮的优化方案,具有进一步的非对映选择性和官能团耐受氢化成 α-甲基酮。讨论了所提议方法的范围和局限性。证明了与已知程序相比的优点。暗示了丙酮在氢化中的意想不到的作用。显示了对早期构建块合成和后期 CH 功能化方法的评估。复杂程序的可制备性和可扩展性通过合成高达 100 g 的几种 α-甲基酮来证明。