Catalyst-Free Oxytrifluoromethylation of Alkenes through Paired Electrolysis in Organic-Aqueous Media
作者:Wolfgang Jud、C. Oliver Kappe、David Cantillo
DOI:10.1002/chem.201804708
日期:2018.11.22
A mild, catalyst‐free electrochemical oxytrifluoromethylation of alkenes has been developed. The procedure is based on the paired electrolysis of sodium triflinate and water in an undivided cell. Anodic oxidation of the triflinate anion generates trifluoromethyl radicals that react with the alkene. Water plays a dual role as oxidant for the cathode and nucleophile. The method has been utilized to prepare
Sunlight-driven trifluoromethylation of olefinic substrates by photoredox catalysis: A green organic process
作者:Munetaka Akita、Takashi Koike
DOI:10.1016/j.crci.2015.01.013
日期:2015.7
types of catalytic photoredox processes following the reductive quenching cycle (RQC) and the oxidative quenching cycle (OQC), the discussion is focused on organic transformations based on OQC, in particular the trifluoromethylation of olefinic substrates with electrophilic trifluoromethylating reagents furnishing solvolytic addition products and substitution products. It is concluded that catalytic
Cobalt–Tertiary-Amine-Mediated Hydroxytrifluoromethylation of Alkenes with CF<sub>3</sub>Br and Atmospheric Oxygen
作者:Qiankun Li、Wu Fan、Deqian Peng、Bingyin Meng、Shaohan Wang、Rui Huang、Shihao Liu、Suhua Li
DOI:10.1021/acscatal.0c00498
日期:2020.4.3
The mild and efficient hydroxytrifluoromethylation of alkenes with bromotrifluoromethane (CF3Br) and atmospheric oxygen mediated by cobalt-tertiary amine is described. This reaction proceeds with broad substrate scope and good functional group compatibility. Mechanistic studies indicate that the reaction proceeds through a radical pathway, which is enabled by combination of the previously unexplored
Copper-Catalyzed Three-Component Oxytrifluoromethylation of Alkenes with Sodium Trifluoromethanesulfinate and Hydroxamic Acid
作者:Xin-Yi Jiang、Feng-Ling Qing
DOI:10.1002/anie.201307595
日期:2013.12.23
Radical paths: The title reaction of olefins with NaSO2CF3 and N‐hydroxy‐N‐phenylacetamide at room temperature is described for the first time (see scheme). This reaction provides a practical and convenient route to a series of trifluoromethylated alcohols bearing a wide range of functional groups.