20984-26-3Relevant articles and documents
Photoredox-Catalyzed Cascade Radical Cyclization of Ester Arylpropiolates with CF3SO2Cl to Construct 3-Trifluoromethyl Coumarin Derivatives
Chen, Long,Wu, Lianlian,Duan, Weijie,Wang, Tao,Li, Letian,Zhang, Keke,Zhu, Jingmei,Peng, Zhi,Xiong, Fei
, p. 8607 - 8614 (2018)
We report a highly efficient method to construct 3-trifluoromethyl coumarins using CF3SO2Cl as the trifluoromethyl radical source with ester 3-arylpropiolates. The reaction incorporated a cascade cyclization/dearomatization/ester mig
Cyclization of aryl 3-aryl propynoates into 4-arylcoumarins catalyzed by cyclometalated Platinum(II) complexes
Zaitceva, Olesia,Bénéteau, Valérie,Ryabukhin, Dmitry S.,Eliseev, Ivan I.,Kinzhalov, Mikhal A.,Louis, Benoit,Vasilyev, Aleksander V.,Pale, Patrick
supporting information, (2020/03/05)
Cyclometalated (ppy)PtII complexes (ppy = 2-phenylpyridinato-C2,N) catalyze the intramolecular cyclization of aryl propynoates to form coumarins and benzocoumarins. The complex [(ppy)PtCl(MeCN)] (5 mol %) was the most active and effi
Visible-light photoredox catalyzed cyclization of aryl alkynoates for the synthesis of trifluoromethylated coumarins
Bu, Mei-jie,Lu, Guo-ping,Cai, Chun
, p. 70 - 74 (2018/07/13)
A strategy for the synthesis of coumarin derivatives via visible-light photoredox catalysis has been developed using fac-Ir(ppy)3 as the photocatalyst under mild conditions. Trifluoromethanesulfonyl chloride is utilized as the trifluoromethylat
