highly crystalline small‐size cubic‐phase MgOnanoparticles with a high dispersion. The basicity of the MgO‐supported mesoporouscarbons can also be controlled by simply changing the loading of the MgO and the pore diameter of the support. These materials have been employed as heterogeneous catalysts for the first time in the selective synthesis of sulfinamides. Among the catalysts investigated, the support
hydrogen atom transfer (HAT) catalysts for selective Si−H functionalizations of a broad range of silanes. N-centered radicals, catalytically generated from sulfonamides by photoredox catalyzed single-electron oxidation, are the key intermediates that enable an effective HAT process for silyl radical generation to achieve hydrosilylation of activated alkenes. Additionally, this catalytic system can also
现成的、空间和电子可调谐的磺胺类化合物已被开发为有效的光诱导氢原子转移 (HAT) 催化剂,用于多种硅烷的选择性 Si-H 官能化。否以磺胺类化合物为中心的自由基通过光氧化还原催化的单电子氧化催化生成,是使甲硅烷基自由基生成的有效 HAT 过程实现活化烯烃氢化硅烷化的关键中间体。此外,该催化体系还可用于激活 Ge-H 键,通过磺酰胺衍生的氮中心自由基通过氢原子转移对活化烯烃进行加氢锗化反应。使用这种光化学 HAT 过程产生甲硅烷基和甲锗烷基自由基的能力为有机硅和有机锗化合物的可持续合成提供了新途径。
VILKAS E., BULL. SOC. CHIM. FRANCE, 1978, PART. 2, NO 1-2, 37-38
作者:VILKAS E.
DOI:——
日期:——
Iron-Catalyzed Hydroamination and Hydroetherification of Unactivated Alkenes
作者:Paul T. Marcyk、Silas P. Cook
DOI:10.1021/acs.orglett.9b00427
日期:2019.3.1
The hydrofunctionalization of alkenes, explored for over 100 years, offers the potential for a direct, atom-economical approach to value-added products. While thermodynamically favored, the kinetic barrier to such processes necessitates the use of catalysts to control selectivity and reactivity. Modern variants typically rely on noble metals that require different ligands for each class of hydrofunctionalization