Patent ID: 8604257
Filing Date: 2013-12-10
Classification: C07B,C07C

Abstract:
1. A process for manufacturing cis-hexafluororo-2-butene comprising the steps of: (a) contacting 1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113a) with an ethene compound having two, three or four chlorine substituents in the presence of an addition reaction catalyst under conditions effective to facilitate an addition reaction to form a product stream comprising a compound of the formula where X=H or Cl; (b) contacting chlorine with the product stream formed in step (a) under conditions effective to facilitate a chlorination reaction and to form a product stream comprising CF (c) contacting HF with the CF (d) dehydrohalogenating, or hydrodechlorinating, and reducing the CF