Structurally diverse arylchlorides were silylated with sodium silylsilanolate reagents in the presence of a Ni(cod)2 catalyst complexed with a phosphine ligand; PMe2Ph for electron-rich substrates, and PCy2Ph for electron-deficient ones. The mild reaction conditions allowed the silylation of various arylchlorides including functionalised drug molecules.
Synthesis of Nitrosobenzene Derivatives via Nitrosodesilylation Reaction
作者:Corinna Kohlmeyer、Maike Klüppel、Gerhard Hilt
DOI:10.1021/acs.joc.8b00262
日期:2018.4.6
of trimethylsilyl-substituted benzene derivatives into nitrosobenzene derivatives is reported. The optimization of the reaction conditions was performed for moderately electron-deficient, electron-rich, and sterically hindered starting materials by varying reaction time, temperature, and equivalents of NOBF4. Also, a stable intermediate of the nitrosation reaction could be characterized by 19F NMR which
报道了三甲基甲硅烷基取代的苯衍生物的亲电子ipso-取代成亚硝基苯衍生物。通过改变反应时间,温度和NOBF 4的当量,对中度电子不足,电子富集和空间受阻的原料进行了反应条件的优化。而且,亚硝化反应的稳定中间体可以通过19 F NMR表征,该19 F NMR可以与亚硝基苯衍生物分配给NO +加成物。该配合物在水后处理中分解并释放出所需的亚硝基苯衍生物。
Application of Solid Me<sub>3</sub>SiZnI for the Synthesis of Aryl and Alkyl Trimethylsilanes
作者:Anirban Ganguly、Revathi Chandrasekaran、Bala S. S. Balamurugan、Ramesh Rasappan
DOI:10.1002/adsc.202301298
日期:2024.3.19
group compatibility renders silylzinc reagents desirable; however, their development is hindered by their synthesis using pyrophoric silyllithium and dissolved lithium salts. Our solid Me3SiZnI circumvents these limitations and herein, we demonstrate its significance in the cross-coupling of aryl and alkyl bromides.