文献类型：期刊文献

英文题名：Intramolecular Crossed [2+2] Cycloaddition through Visible-Light Triplet Sensitization: Expedient Access to Bridged Bicyclic Alkene

作者：Li, Min[1,2];Tao, Le-Yi[3];Gu, Xin-Tao[3];Wei, Yin[3];Shi, Min[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Chinese Acad Sci, Ctr Excellence Mol Synth,State Key Lab Organometal, 345 Lingling Rd, Shanghai 200032, Peoples R China

年份：2025

卷号：367

期号：5

外文期刊名：ADVANCED SYNTHESIS & CATALYSIS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001402593500001)】；

基金：We are grateful for the financial support from the National Key R & D Program of China (2023YFA1506700), the National Natural Science Foundation of China (21372250, 21121062, 21302203, 20732008, 21772037, 21772226, 21861132014, 91956115, and 22171078), and the Fundamental Research Funds for the Central Universities 222201717003.

语种：英文

外文关键词：intramolecular crossed [2+2] cycloaddition; Iridium(III) catalyst; bridged bicyclic alkene; alkylidenecyclopropanes; triplet energy transfer; sulfonyl radicals assisted

摘要：A visible-light-induced intramolecular crossed [2+2] cycloaddition reaction of allene-tethered alkylidenecyclopropanes was reported in this paper. The reactions were conducted under mild conditions using Iridium(III) catalyst FirPic as a photosensitizer for energy transfer, affording bridged bicyclic alkenes in moderate to good yields with excellent regioselectivity and stereoselectivity through the regulation of substituents at the olefin's terminal position. Meanwhile, the computational study explained the special region control assisted by sulfonyl radicals in detail.