Visible-Light Photocatalytic Aerobic C═C Bond Cleavage of Alkenes to Carbonyls by CsPbBr<sub>3</sub> Nanocrystals
作者:Qiangwen Fan、Honglei Zhang、Dawei Liu、Chunpei Yan、Haibo Zhu、Zongbo Xie、Zhanggao Le
DOI:10.1021/acs.joc.3c00653
日期:2023.6.2
terminal and internal alkenes. Detailed mechanism studies indicated that a single-electron transfer (SET) process was involved in this transformation, wherein the superoxide radical (O2•–) and photogenerated holes played crucial roles. Additionally, DFT calculations revealed that the reaction was initiated by the addition of O2•– to the terminal carbon atom of the C═C bond and completed by releasing
在此,我们报道了一种简便易行的可见光驱动光催化方案,使用 CsPbBr 3纳米晶体作为光催化剂,诱导 C=C 键氧化裂解为相应的羰基。该催化体系适用于范围广泛的末端和内部烯烃。详细的机制研究表明,单电子转移(SET)过程参与了这一转变,其中超氧自由基(O 2 •–)和光生空穴起着至关重要的作用。此外,DFT 计算显示反应是由添加 O 2引发的•–到C=C键的末端碳原子,通过形成的[2+2]中间体释放一个分子甲醛完成;后一种转化是速率决定过程。