N-tosyl vinylaziridines toward arynes has been demonstrated under mild and transition-metal-free conditions to yield 2-(phenanthren-9-yl)ethan-1-sulfamides in moderate to good yields. The selective synthesis of N-H and N-aryl products was accomplished using CsF in MeCN and KF/18-C-6 in 1,4-dioxane, respectively. This cascade process involves a sequential Diels-Alder reaction, ring-opening aromatization
Palladium-Catalyzed Regioselective [5 + 1] Annulation of Vinyl Aziridines/Epoxides with ClCF<sub>2</sub>COONa
作者:Dandan Zuo、Tao Zhang、Jingjing Zhao、Wen Luo、Chaojie Wang、Pan Li
DOI:10.1021/acs.orglett.2c01739
日期:2022.7.1
regioselective [5 + 1] annulation reactions of vinyl aziridines/epoxides with ClCF2COONa have been developed. Significantly, vinyl aziridines/epoxides act as heteroatom-containing five-atom synthons, and commercially available and cheap ClCF2COONa acts as the source of carbonyl serving as a difluorocarbene precursor. This protocol provides an efficient and practical method for the synthesis of δ-lactams and
Palladium-Catalyzed Carbonylative [5+1] Cycloaddition of <i>N</i>-Tosyl Vinylaziridines: Solvent-Controlled Divergent Synthesis of α,β- and β,γ-Unsaturated δ-Lactams
作者:Tao Zhang、Shichong Wang、Dandan Zuo、Jingjing Zhao、Wen Luo、Chaojie Wang、Pan Li