Metal-Free CH Bond Activation of Branched Aldehydes with a Hypervalent Iodine(III) Catalyst under Visible-Light Photolysis: Successful Trapping with Electron-Deficient Olefins
作者:Shin A. Moteki、Asuka Usui、Sermadurai Selvakumar、Tiexin Zhang、Keiji Maruoka
DOI:10.1002/anie.201406513
日期:2014.10.6
of a hypervalentiodine(III) catalystunder visible light photolysis allows a mild way of generating acyl radicals from various branchedaldehydes, thereby giving the corresponding hydroacylated products almost exclusively. Another characteristic feature of this approach is the catalytic use of hypervalentiodine(III) reagent, which is a rare example on the generation of radicals in hypervalent iodine
Efficient C(sp<sup>3</sup>)−H Carbonylation of Light and Heavy Hydrocarbons with Carbon Monoxide via Hydrogen Atom Transfer Photocatalysis in Flow**
作者:Fabian Raymenants、Tom M. Masson、Jesús Sanjosé‐Orduna、Timothy Noël
DOI:10.1002/anie.202308563
日期:2023.9.4
an efficient C−H functionalization process, enabling the regioselective installation of carbonyls in light and heavy hydrocarbons by using inexpensive carbon monoxide. Safe processing of hazardous CO and flammable alkanes is ensured in flow, with high gas-liquid mass transfer rates and fast reaction kinetics. Our method demonstrates the valorization of gaseous reagents, coupling light alkanes, CO, and
我们报告了一种高效的 C−H 官能化过程,通过使用廉价的一氧化碳,能够在轻质和重质烃中选择性安装羰基。具有高气液传质速率和快速反应动力学,可确保危险的 CO 和易燃烷烃的安全加工。我们的方法演示了气态试剂的增值,将轻质烷烃、CO 和烯烃偶联作为末端自由基陷阱。
Acylation of Electrophilic Olefins through Decatungstate-Photocatalyzed Activation of Aldehydes