Donor–acceptor fluorophores as efficient energy transfer photocatalysts for [2 + 2] photodimerization
作者:Qing-An Wu、Feng Chen、Chen-Chao Ren、Xue-Fen Liu、Hao Chen、Liang-Xuan Xu、Xiao-Cong Yu、Shu-Ping Luo
DOI:10.1039/c9ob02735a
日期:——
Mild [2 + 2] photodimerization of enone substrates was induced by donor-acceptor fluorophores. Enone substrates were activated efficiently for anti-head to head dimerizations with a high yield (up to 83%) and high selectivity. The adjustable excited state potential also allows donor-acceptor fluorophores to be used for isomerization of the above substrates, confirming the potential of donor-acceptor
Heteroleptic copper(I) complexes as energy transfer photocatalysts for the intermolecular [2 + 2] photodimerization of chalcones, cinnamates and cinnamamides
作者:Qing-An Wu、Chen-Chao Ren、Feng Chen、Tian-Qi Wang、Yu Zhang、Xue-Fen Liu、Jian-Bin Chen、Shu-Ping Luo
DOI:10.1016/j.tetlet.2021.153091
日期:2021.5
The [2 + 2] photodimerization of chalcones, cinnamates and cinnamamides can be effectively catalyzed by heteroleptic copper(I) complexes. The reactions were carried out under mild reaction conditions and the products were obtained in 20–72% yield under visible light irradiation. The copper-based photocatalyst comprised of the rigid phenanthroline ligand with substituents at the 2,9-positions and the