Catalytic liquid phase fluorinations with SbTi mixed halides

Synthesis conditions and activity of various Lewis acids for the fluorination of trichloromethoxy-benzene by HF in liquid phase

“…In the presence of HF, SbCl 5 can easily form a mixed halide (Scheme 1) such as SbCl x F 5Àx which could give protons and very reactive nucleophilic species, the antimony being a good halogen acceptor. A S N 2 concerted mechanism can be proposed to explain the last Cl/F exchange in the presence of SbCl x F 6Àx À as reported in the literature for the fluorination of aliphatic chlorinated [16][17][18][19][20][21][22].…”

Effects of M-promoter (M=Y, Co, La, Zn) on Cr2O3 catalysts for fluorination of perchloroethylene

“…CF 3 CHF 2 þ HCl (3) Note that the first step is usually carried out in liquid phase in industrial production using SbF 5 as the catalyst [19]. Due to the advantages of gas phase method, gas phase reaction is chosen for this step.…”