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1. WO2020206247 - PROCESS FOR PRODUCING 1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE

Publication Number WO/2020/206247
Publication Date 08.10.2020
International Application No. PCT/US2020/026570
International Filing Date 03.04.2020
IPC
C07C 17/20 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
093by replacement by halogens
20of halogen atoms by other halogen atoms
C07C 17/25 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
25by splitting-off hydrogen halides from halogenated hydrocarbons
C07C 17/278 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
26by reactions involving an increase in the number of carbon atoms in the skeleton
272by addition reactions
278of only halogenated hydrocarbons
C07C 17/281 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
26by reactions involving an increase in the number of carbon atoms in the skeleton
272by addition reactions
278of only halogenated hydrocarbons
281of only one compound
C07C 17/354 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
35by reactions not affecting the number of carbon or halogen atoms in the molecules
354by hydrogenation
C07C 21/18 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
21Acyclic unsaturated compounds containing halogen atoms
02containing carbon-to-carbon double bonds
18containing fluorine
CPC
C07C 17/204
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
093by replacement by halogens
20of halogen atoms by other halogen atoms
202two or more compounds being involved in the reaction
204the other compound being a halogen
C07C 17/206
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
093by replacement by halogens
20of halogen atoms by other halogen atoms
202two or more compounds being involved in the reaction
206the other compound being HX
C07C 17/25
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
25by splitting-off hydrogen halides from halogenated hydrocarbons
C07C 17/278
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
26by reactions involving an increase in the number of carbon atoms in the skeleton
272by addition reactions
278of only halogenated hydrocarbons
C07C 17/281
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
26by reactions involving an increase in the number of carbon atoms in the skeleton
272by addition reactions
278of only halogenated hydrocarbons
281of only one compound
C07C 17/354
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
35by reactions not affecting the number of carbon or of halogen atoms in the reaction
354by hydrogenation
Applicants
  • THE CHEMOURS COMPANY FC, LLC [US]/[US]
Inventors
  • PENG, Sheng
  • SIEVERT, Allen Capron
Agents
  • SANCHEZ, Kathryn M
Priority Data
62/829,83205.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PRODUCING 1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE
(FR) PROCÉDÉ DE PRODUCTION DE 1,1,1,4,4,4-HEXAFLUOROBUT-2-ÈNE
Abstract
(EN)
A process for producing E-1,1,1,4,4,4-hexafluorobut-2-ene comprises contacting 1,1,2,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the vapor phase in the presence of a fluorination catalyst. A process for producing Z-1,1,1,4,4,4-hexafluorobut-2-ene further comprises contacting E-1,1,1,4,4,4-hexafluoro-2-butene with chlorine in the presence of a catalyst to produce 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane, followed by reaction with base to produce 1,1,1,4,4,4-hexafluoro-2-butyne, and subsequently hydrogenating hexafluoro-2-butyne to produce Z-1,1,1,4,4,4-hexafluoro-2-butene.
(FR)
La présente invention concerne un procédé de production de E-1,1,1,4,4,4-hexafluorobut-2-ène qui comprend la mise en contact du 1,1,2,4,4-pentachlorobuta-1,3-diène avec du fluorure d'hydrogène dans la phase vapeur en présence d'un catalyseur de fluoration. Un procédé de production de Z-1,1,1,4,4,4-hexafluorobut-2-ène comprend en outre la mise en contact du E-1,1,1,4,4,4-hexafluoro-2-butène avec du chlore en présence d'un catalyseur pour produire du 2,3-dichloro-1,1,1,4,4,4-hexafluorobutane, suivie d'une réaction avec une base pour produire du 1,1,1,4,4,4-hexafluoro-2-butyne, et puis l'hydrogénation du hexafluoro-2-butyne pour produire du Z-1,1,1,4,4,4-hexafluoro-2-butène.
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