Process for making 1,1,1,4,4,4-Hexafluoro-2-butene
View Patent ↗A process is disclosed for making 1,1,1,4,4,4-hexafluoro-2-butene. The process involves reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent and 2,2′-bipyridine. A process is also disclosed for making 1,1,1,4,4,4-hexafluoro-2-butene. The process involves reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent and a Cu(I) salt. A process is further disclosed for making 1,1,1,4,4,4-hexafluoro-2-butene. The process involves reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent, 2,2′-bipyridine and a Cu(I) salt.
1. A process for making 1,1,1,4,4,4-hexafluoro-2-butene comprising reacting 2,2-dichloro-1,1,1-trifluoroethane with copper in the presence of an amide solvent and 2,2′-bipyridine.
2. The process of claim 1 , wherein the reaction also takes place in the presence of a Cu(I) salt.
3. The process of claim 1 wherein said amide solvent is selected from the group consisting of dimethylformamide, dimethylacetamide and N-methylpyrrolidone.
4. The process of claim 3 wherein said amide solvent is dimethylformamide.
5. The process of claim 2 wherein said Cu(I) salt is selected from the group consisting of CuCl, CuBr, CuI and copper(I) acetate.
6. The process of claim 5 wherein said Cu(I) salt is CuCl.
7. The process of claim 1 wherein said process is conducted in the presence of an amine.
8. The process of claim 1 wherein said process is conducted at a temperature of from about 20° C. to about 150° C.
9. The process of claim 8 wherein said temperature is from about 60° C. to about 150° C.