ABSTRACT
A novel photoredox-mediated tandem three-component process afforded a wide variety of CF3-containing phthalans and isoindolines in respectable yields and with moderate to excellent diastereoselectivity.
ABSTRACT
We report herein the first photoredox-catalyzed intermolecular aryl- and heteroaryltrifluoromethylation of alkenes. Under the optimized conditions using Umemoto's reagent as a CF3 source, a wide range of styrenes can be readily difunctionalized, affording the corresponding trifluoromethylated adducts in up to 99% yield.
ABSTRACT
We report herein a photoredox-catalyzed azidotrifluoromethylation of alkenes. Under the optimized conditions using [Ru(bpy)3(PF6)2] as the photocatalyst and Umemoto's reagent as the CF3 source, a wide range of substituted styrenes as well as various activated and nonactivated alkenes can readily be difunctionalized, affording ß-trifluoromethylated azides or amines in good yields.
Subject(s)
Alkenes/chemistry , Azides/chemistry , Hydrocarbons, Fluorinated/chemistry , Styrenes/chemistry , 2,2'-Dipyridyl/analogs & derivatives , 2,2'-Dipyridyl/chemistry , Amines/chemistry , Catalysis , Coordination Complexes , Molecular Structure , Oxidation-Reduction , Photochemical ProcessesABSTRACT
A photoredox-catalzyed trifluoromethylation of enecarbamates process is reported. This pathway uses Togni's reagent as the CF3 source and follows a radical/cationic pathway. Under the optimized conditions using [Ru(bpy)3(PF6)2] as the photocatalyst, a wide range of substituted enecarbamates can readily be difunctionalized by means of various O, N, and C nucleophiles.
