Sulfolane → 1,1,1,4,4,4-Hexafluoro-2-butene

HRID 2211353

Reaction equation

Cl[C:2]([F:11])([F:10])[CH:3](Cl)[CH2:4][C:5]([F:8])([F:7])[F:6].C1S(=O)(=O)CCC1.[F-:19].[K+]>>[F:10][C:2]([F:11])([F:19])[CH:3]=[CH:4][C:5]([F:8])([F:7])[F:6]

Participants

Reactant 3

HCID 31347Sulfolane

HCID 522689Potassium Fluoride

HCID 111174731,2-Dichloro-1,1,4,4,4-pentafluorobutane

Product 1

HCID 27749751,1,1,4,4,4-Hexafluoro-2-buteneYield 89.5%

Procedure

960 g of 1,2-dichloro-1,1,4,4,4-pentafluorobutane were added dropwise to a mixture of 3 1 of distilled tetramethylene sulphone and 830 g of dried potassium fluoride at 190° C. and 1,1,1,4,4,4-hexafluorobut-2-ene was distilled off as it was formed. The product thus obtained was redistilled to give 650 g of 1,1,1,4,4,4-hexafluorobut-2-ene having a boiling point of 8° C at atmospheric pressure.

Workup

distillation1,1,1,4,4,4-hexafluorobut-2-ene was distilled off as it
customwas formed
customThe product thus obtained
distillationwas redistilled

Sources & evidence

ORD record: ord-459268720f1f4dc699fefbe01e426f9b
Source dataset: uspto-grants-1995_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05463150

Linked notes

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