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