Controlled <i>meta</i>-Selective C–H Mono- and Di-Olefination of Mandelic Acid Derivatives
作者:Perumal Muthuraja、Rahamdil Usman、Revathy Sajeev、Purushothaman Gopinath
DOI:10.1021/acs.orglett.1c02080
日期:2021.8.6
Mandelic acids represent a key structural motif present in many drug molecules. Herein, we report the controlled meta-selective mono- and diolefination of mandelic acids by the careful design of the substrate and oxidant. Furthermore, free meta-functionalized mandelic acid was generated by selectively removing the template under mild basic conditions. The synthesis of functionalized homatropine and
扁桃酸代表了许多药物分子中存在的关键结构基序。在此,我们通过精心设计的底物和氧化剂报告了扁桃酸的受控间位选择性单烯和二烯化。此外,通过在温和的碱性条件下选择性去除模板,产生游离的间位官能化扁桃酸。证明了功能化可马托品和环兰地酯药物衍生物的合成。动力学同位素效应显示 C-H 活化是限速步骤。