作者:Jason M. Lenihan、Matthew J. Mailloux、Aaron B. Beeler
DOI:10.1021/acs.oprd.2c00049
日期:2022.6.17
multigram scalesynthesis of heterodimeric β-truxinic imides piperarborenines C-E using a catechol-tethered diastereoselective intramolecular [2 + 2] photocycloaddition. Key innovations lie in the use of catechol as a practical auxiliary for the synthesis of homo- and heterodimeric β-truxinates and the use of a UV-LED flow photoreactor in the [2 + 2] step. This approach is highly scalable, requiring
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