methane in trifluoroacetic acid byproducts: CO2; React. between CH4 and Pb-compd. in CF3COOH soln. is carried out at 30 atm of initial CH4 and 180°C (3 h).; Identification of CF3COOMe by GLC anal. and PMR spectroscopy.;

in trifluoroacetic acid T=25°C; competitive reaction in presence of benzene; Product distribution;

in trifluoroacetic acid T=25°C; competitive reaction in presence of benzene; Product distribution;

in further solvent(s) Irradiation (UV/VIS); UV-irradiation of Pb(CF3COO)4 in C6F6 at -196°C;; determination by ESR;;