Visible-Light-Promoted Tandem Annulation of <i>N</i>-(<i>o</i>-Ethynylaryl)acrylamides with CH<sub>2</sub>Cl<sub>2</sub>
作者:Yu Liu、Ren-Jie Song、Shenglian Luo、Jin-Heng Li
DOI:10.1021/acs.orglett.7b03561
日期:2018.1.5
A novel tandem annulation of N-(o-ethynylaryl)acrylamides, with CH2Cl2 as a one-carbon unit, for the divergent synthesis of cyclopenta[c]quinolin-4(5H)-ones and benzo[j]phenanthridin-6(5H)-ones, which relies on the substitution effect of the 2 position of the acrylamide moiety, is described. Promoted by the visible-light photoredox catalysis, this reaction allows the formation of multiple chemical
Copper-Catalyzed Radical [2 + 2 + 1] Annulation of Benzene-Linked 1,<i>n</i>-Enynes with Azide: Fused Pyrroline Compounds
作者:Xuan-Hui Ouyang、Ren-Jie Song、Yu Liu、Ming Hu、Jin-Heng Li
DOI:10.1021/acs.orglett.5b03040
日期:2015.12.18
A novel selective copper-catalyzed radical [2 + 2 + 1] annulation of benzene-linked 1,n-enynes with azido-benziodoxolone to access fused pyrroline compounds, including 3H-pyrrolo[3,4-c]quinolin-4(3aH)-ones, chromeno[3,4-c]pyrrol-4(9bH)-one, and indeno[1,2-c]pyrroline, has been developed, which proceeds via the addition of the azide radical to the alkene, annualtion, and azidation cascade.
Demethylenative cyclization of 1,7-enynes using α-amino radicals as a traceless initiator enabled by Cu(i)-photosensitizers
作者:Qinfang Jiang、Hanyang Bao、Yun Peng、Yan Zhou、Lang Chen、Yunkui Liu
DOI:10.1039/d4cc01592d
日期:——
A Cu(i)-photosensitizer-enabled demethylenative radical cyclization of 1,7-enynes to access quinoline-2-(1H)-ones was successfully achieved using α-amino radicals as a traceless radical initiator.
Stereoselective Three-Component Carbocyclization of 1,7-Enynes with Sulfoxonium Ylides and Water under Photoredox Catalysis