Development and Application of O-(Trimethylsilyl)aryl Fluorosulfates for the Synthesis of Arynes
摘要:
A class of o-(trimethylsilyl)aryl fluorosulfates was synthesized by a concise method and successfully used as aryne precursors for the first time. Different trapping agents such as azides, furans, and acyl acetoacetates could successfully react with the aryne precursors under mild conditions with good to excellent yields.
phenol from ortho-bromophenyl silylethers without using RLi is described. Various ortho-bromophenyl silylethers are treated with commercially available Mg turnings, which are easy to handle in air, and transfer of the silyl group to the ortho-position occurs in good to high yields. Selective mono-magnesiation of 2,6-dibromophenyl silylether is observed even in the presence of excess Mg, and ortho-bromo-6-silylphenol
描述了不使用RLi由邻-溴苯基甲硅烷基醚实际合成邻-甲硅烷基取代的苯酚的方法。各种邻-溴苯基甲硅烷基醚用市售的Mg车削剂处理,易在空气中处理,并且甲硅烷基转移至邻位的收率高至高。即使在存在过量的Mg的情况下,也观察到2,6-二溴苯基甲硅烷基醚的选择性单放大,并且获得了邻溴-6-甲硅烷基苯酚作为主要产物。将得到的邻甲硅烷基取代的苯酚用(CH 2 O)n / MgCl 2 / Et 3甲酰化。N,然后与二胺缩合以良好的收率得到甲硅烷基取代的Salen型配体。该方案适用于大规模合成带有亚胺基的甲硅烷基取代的salen型配体。
Rational Design of Silicon‐Based Zinc Ionophores
作者:Kei Yamada、Arghya Deb、Veronika M. Shoba、Donghyun Lim、Basudeb Maji、Ashley E. Modell、Amit Choudhary
DOI:10.1002/anie.202201698
日期:2022.6.7
A general approach to rationally design ZnII ionophores from ZnII chelator by incorporation of silyl-based groups is reported. These ionophores were more potent than several reported ZnII ionophores. Furthermore, these ZnII ionophores demonstrated selective antibacterial activity and lower mammalian cell toxicity compared to the known ionophore, pyrithione.