tetrachloromethane; copper; zinc in dimethyl sulfoxide 2 h;

tetrachloromethane T=350°C; 24 h;

tetrachloromethane; carbon T=380 - 400°C; 10 h; other perfluoroacyl fluoride, in the absence of CCl4, also in the presence of var. halogens, also in absence of the active charcoal, also with γ-Al2O3 or active carbon (SKT-6), var. temperatures; Mechanism;

sodium dithionite; sodium hydrogencarbonate in dimethyl sulfoxide T=75°C; 8 h; Title compound not separated from byproducts;

sodium dithionite; sodium hydrogencarbonate in dimethyl sulfoxide T=75°C; 8 h; Title compound not separated from byproducts;

triphenylphosphine; nickel dichloride; zinc in N,N-dimethyl-formamide T=100°C; 8 h;

triphenylphosphine; nickel dichloride; zinc in N,N-dimethyl-formamide T=100°C; 7 h; Title compound not separated from byproducts.;