Patent · US Active

Process for making 1,1,1,4,4,4-Hexafluoro-2-butene

US8436216B2 · kind B2 · utility

4Cited by

2References

9Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Xuehui Sun · Swedesboro, US
Mario Joseph Nappa · Newark, US
Win-Chung Lee · Parkersburg, US

Key dates

Filing date	Mar 18, 2009
Grant date	May 7, 2013
Priority date	—
Expiry date	Dec 13, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C17/269
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.