potassium carbonate; triethylamine in N,N-dimethyl-formamide 8 h; Heating;

hydrogen; palladium carbon in methanol 0.5 h; Ambient temperature; Yield given;

1: 5-fluoropyrimidine-2,4-dione With sodium hydride in tetrahydrofuran; N,N-dimethyl-formamide T=60°C; 0.75 h; 2: ethylene,methyl acetate With 1,1'-bis-(diphenylphosphino)ferrocene; tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; N,N-dimethyl-formamide T=40°C; Tsuji-Trost reaction;

in acetonitrile 1) room temp., 2 h; 2) reflux, 2 h; 3) room temp., overnight.;

potassium carbonate multistep reaction; Product distribution;