1: diethyl malonate With potassium fluoride; sodium hydride in N,N-dimethyl-formamide T=20°C; 0.166667 h; 2: 2-Bromo-3,3,3-trifluoro-propene in N,N-dimethyl-formamide T=50 - 110°C; 8 h; Further stages.;

1: diethyl malonate With 1,8-diazabicyclo[5.4.0]undec-7-ene in dimethyl sulfoxide T=27°C; 0.166667 h; Inert atmosphere; 2: E-(β-trifluoromethyl)vinyl diphenylsulfonium trifluoromethanesulfonate in dimethyl sulfoxide T=27°C; Inert atmosphere;

potassium fluoride in N,N-dimethyl-formamide T=110°C; 4 h;

1: diethyl malonate With sodium hydride in dimethyl sulfoxide; mineral oil T=27°C; 0.166667 h; Inert atmosphere; 2: E-(β-trifluoromethyl)vinyl tetramethylenesulfonium trifluoromethanesulfonate in dimethyl sulfoxide; mineral oil T=27°C; Inert atmosphere;

1: NaH / 50 °C 2: KF / dimethylformamide / 4 h / 110 °C View Scheme

sodium hydride T=50°C;

1: diethyl malonate With sodium hydride in dimethyl sulfoxide; mineral oil T=27°C; 0.166667 h; Inert atmosphere; 2: E-(β-trifluoromethyl)vinyl diphenylsulfonium trifluoromethanesulfonate in dimethyl sulfoxide; mineral oil T=27°C; Inert atmosphere;