Visible‐Light‐Enabled Trifluoromethylative Pyridylation of Alkenes from Pyridines and Triflic Anhydride
作者:Kangjae Lee、Seojin Lee、Namhoon Kim、Seonyul Kim、Sungwoo Hong
DOI:10.1002/anie.202004439
日期:2020.8.3
strategy for visible‐light‐enabled site‐selective trifluoromethylative pyridylation of unactivated alkenes has been developed using pyridines and triflic anhydride (Tf2O). Intriguingly, the N‐triflylpyridinium salts, generated in situ from pyridines and Tf2O, serve as effective modular bifunctionalreagents to install both CF3 and pyridyl groups to various olefins while controlling C4‐selectivity in radical
Photoinduced Carboarylation of Alkenes by Using Bifunctional Reagents
作者:Sungwoo Hong、Minseok Kim、Kangjae Lee、Seonyul Kim
DOI:10.1055/a-2033-8155
日期:——
Intermolecular alkene difunctionalization is an effective method for rapidly increasing molecular complexity with two valuable groups. We report a strategy for the photocatalytic radical-mediated desulfonylative carboarylation of alkenes by using strategically designed arylsulfonyl acetates as both arylating and carbonylating reagents. By using an Ir complex as a photocatalyst, aryl and carbonyl groups
分子间烯烃双官能化是快速增加具有两个有价值基团的分子复杂性的有效方法。我们报告了一种通过使用策略性设计的芳基磺酰基乙酸酯作为芳基化和羰基化试剂进行光催化自由基介导的烯烃脱磺酰基化碳芳基化的策略。通过使用 Ir 配合物作为光催化剂,芳基和羰基同时结合到烯烃中,在温和的反应条件下提供合成有用的衍生物。这种转变的特点是广泛的底物范围和良好的官能团相容性。
ESTER COMPOUND, AND NON-AQUEOUS ELECTROLYTE SOLUTION AND LITHIUM SECONDARY BATTERY EACH USING THE ESTER COMPOUND
申请人:Ube Industries, Ltd.
公开号:EP2108640B1
公开(公告)日:2012-07-25
US8263268B2
申请人:——
公开号:US8263268B2
公开(公告)日:2012-09-11
Hydrophosphonodifluoromethylation of Alkenes via Thiyl-Radical/Photoredox Catalysis
作者:Wenhao Huang、Jingzhi Chen、Daocheng Hong、Wenxin Chen、Xu Cheng、Yuxi Tian、Guigen Li
DOI:10.1021/acs.joc.7b02354
日期:2018.1.19
Visible-light-induced catalytic hydrophosphonodifluoromethylation of mono- and disubstituted alkenes using bromodifluoromethanephosphonate with a Hantzsch ester as the terminal reductant is reported. The combination of thiyl-radical catalysis with photoredoxcatalysis is important for achieving good chemoselectivity and high yields.