Mechanisms and applications of cyclometalated Pt(<scp>ii</scp>) complexes in photoredox catalytic trifluoromethylation
作者:Won Joon Choi、Sungkyu Choi、Kei Ohkubo、Shunichi Fukuzumi、Eun Jin Cho、Youngmin You
DOI:10.1039/c4sc02537g
日期:——
non-prefunctionalized alkenes and heteroarenes in the presence of CF3I under visible light irradiation. The high excited-state redox potentials of the complexes permitted oxidative quenching during the cycle, whereas reductive quenching was forbidden. Spectroscopic measurements, including time-resolved photoluminescence and laser flash photolysis, were performed to identify the catalytic intermediates and
Trifluoromethylation of Alkenes by Visible Light Photoredox Catalysis
作者:Naeem Iqbal、Sungkyu Choi、Eunjin Kim、Eun Jin Cho
DOI:10.1021/jo3022346
日期:2012.12.21
A method for trifluoromethylation of alkenes has been developed employing visible light photoredox catalysis with CF3I, Ru(Phen)(3)Cl-2, and DBU. This process works especially well for terminal alkenes to give alkenyl-CF3 products with only E-stereochemistry. The mild reaction conditions enable the trifluoromethylation of a range of alkenes that bear various functional groups.
Visible-Light-Induced Trifluoromethylation of Unactivated Alkenes with Tri(9-anthryl)borane as an Organophotocatalyst
作者:Jisu Moon、Yu Kyung Moon、Do Dam Park、Sukyung Choi、Youngmin You、Eun Jin Cho
DOI:10.1021/acs.joc.9b01624
日期:2019.10.18
applied as an organophotocatalyst for the visible-light-induced trifluoromethylation of unactivated alkenes with CF3I. The mild reaction conditions tolerated a variety of functional groups, and the reaction could be extended to perfluoroalkylations with C3F7I and C4F9I. Mechanistic studies revealed that the photoredox catalysis involves an oxidative quenching pathway.