External‐Photocatalyst‐Free Visible‐Light‐Mediated Synthesis of Indolizines
作者:Basudev Sahoo、Matthew N. Hopkinson、Frank Glorius
DOI:10.1002/anie.201506868
日期:2015.12.14
A visible‐light‐mediatedsynthesis of valuable polycyclic indolizine heterocycles from easily accessed brominated pyridine and enol carbamate derivatives has been developed. This process, which operates at room temperature under irradiation from readily available light sources, does not require the addition of an external photocatalyst. Instead, an investigation into the reaction mechanism indicates
Structural Design Principle of Small-Molecule Organic Semiconductors for Metal-Free, Visible-Light-Promoted Photocatalysis
作者:Lei Wang、Wei Huang、Run Li、Dominik Gehrig、Paul W. M. Blom、Katharina Landfester、Kai A. I. Zhang
DOI:10.1002/anie.201603789
日期:2016.8.8
on the structural design principle of small‐molecule organic semiconductors as metal‐free, pure organic and visiblelight‐active photocatalysts. Two series of electron‐donor and acceptor‐type organic semiconductor molecules were synthesized to meet crucial requirements, such as 1) absorption range in the visible region, 2) sufficient photoredox potential, and 3) long lifetime of photogenerated excitons
Herein, we report the denovosynthesis and characterization of a series of substituted bithiophene derivatives as novel and inexpensive organic photocatalysts.
在本文中,我们报道了一系列取代的联噻吩衍生物作为新的和廉价的有机光催化剂的从头合成和表征。
Visible-Light Photoredox Catalysis in Flow
作者:Joseph W. Tucker、Yuan Zhang、Timothy F. Jamison、Corey R. J. Stephenson
DOI:10.1002/anie.201200961
日期:2012.4.23
Photoredoxcatalysis: A variety of organic transformations mediated by visible‐light‐active photoredox catalysts have been conducted in a photochemical flow reactor. The reactor design is very simple and can be easily implemented in any laboratory (see picture). In addition, this reactor afforded a marked increase in the reaction rate compared to those observed in typical batch (round bottom flask)
Electron donor-free photoredox catalysis <i>via</i> an electron transfer cascade by cooperative organic photocatalysts
作者:Lei Wang、Irina Rörich、Charusheela Ramanan、Paul W. M. Blom、Wei Huang、Run Li、Kai A. I. Zhang
DOI:10.1039/c8cy01072b
日期:——
dynamics within the cooperative photocatalyst couples. As a model photoredox reaction, the carbon–carbon formation reaction between heteroarenes and malonates, which usually requires electron-donating sacrificial reagents such as amines, was conducted to demonstrate the feasibility of the cooperative photocatalyst couples under visiblelight irradiation. A significant reaction conversion improvement from