Phthalocyanine ruthenium complexes were identified as red-light activatable catalysts for trifluoromethylation reactions. The red-light mediated chlorotrifluoromethylation of alkenes could proceed without any sacrificial reducing reagents. This reaction exhibited good compatibility with a blue-light-absorbing substrate, while under irradiation with blue light, i.e., under traditional photoreaction
Photoredox-catalysed chloro-, bromo- and trifluoromethylthio-trifluoromethylation of unactivated alkenes with sodium triflinate
作者:Jing Fang、Zhong-Kui Wang、Shu-Wei Wu、Wei-Guo Shen、Gui-Zhen Ao、Feng Liu
DOI:10.1039/c7cc01903c
日期:——
A mild and transition-metal-free protocol is herein presented for chloro-, bromo- and trifluoromethylthiotrifluoromethylation of unactivated alkenes. The easy-handling Langlois reagent, as well as N-halophthalimide and N-trifluoromethylthiosaccharin, are used in the method. In the presence of organic photoredox catalyst N-methyl-9-mesityl acridinium, a broad range of desired products were afforded
Vicinal Difunctionalization of Alkenes: Chlorotrifluoromethylation with CF<sub>3</sub>SO<sub>2</sub>Cl by Photoredox Catalysis
作者:Se Hwan Oh、Yashwardhan R. Malpani、Neul Ha、Young-Sik Jung、Soo Bong Han
DOI:10.1021/ol403716t
日期:2014.3.7
Photoredox-catalyzed vicinal chlorotrifluoromethylation of alkene is described. In the presence of Ru(Phen)(3)Cl-2, CF3SO2Cl was used as a source for the CF3 radical and chloride ion under visible light irradiation. Various terminal and internal alkenes were transformed to their vicinal chlorotrifluoromethylated derivatives. Biologically active compounds were applied under the condition to obtain desired products, suggesting that the method could be feasible for late-stage modification in drug discovery.