1: C22H15F12O4P With potassium tert-butylate in tetrahydrofuran T=0°C; deprotonation; 0.5 h; 2: 4-methoxy-benzaldehyde in tetrahydrofuran T=0°C; Wittig type reaction; 3 h; Title compound not separated from byproducts;

1: C22H15F12O4P With potassium tert-butylate in tetrahydrofuran T=0°C; deprotonation; 0.5 h; 2: 4-nitrobenzaldehdye in tetrahydrofuran T=0°C; Wittig type reaction; 3 h; Title compound not separated from byproducts;

1: C22H15F12O4P With n-butyllithium in tetrahydrofuran T=0°C; deprotonation; 2: benzaldehyde in tetrahydrofuran T=0°C; Wittig type reaction;