A well-defined [Ph4P]+[Cu(CF2CF3)2]− complex acts as a versatile pentafluoroethylating reagent for the construction of C(sp3)–, C(sp2)– and C(sp)–CF2CF3 bonds.
A copper-catalyzed pentafluoroethylation of aryl/alkenyl iodides is described using Et3SiCF2CF3 as a direct CF2CF3 source. An intriguing selective photocatalytic hydrodefluorination of pentafluoroethylarenes is also discovered.
A perfluoroalkoxyamine TEMPO-CF2CF3 can be synthesized on gram-scale and it undergoes unusual N–O bond heterolytic cleavage under thermal conditions.
Herein, we report the insertion of a difluoromethylene into 1,1,2,2-tetrafluoro-2-arylethyl copper complexes to synthesize extended perfluoroalkyl-bridged compounds with various functional groups on each edge.
Electron donating and withdrawing groups and their impact on the structure–property relationship of heteroleptic copper(I) complexes are studied. Two different photocatalytic reactions are discussed based on fundamental photophysical parameters.