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US 6,127,587 AGranted
Fluorination process
AssigneeZeneca Limited
InventorAlfred Glyn Williams
Life of this patent
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Abstract
The present invention provides a process for the preparation of 1,1-difluoro-1,4-dichlorobutane by reacting 1,1,1,4-tetrachlorobutane or 1,1,4-trichlorobut-1-ene with hydrogen fluoride in the vapor phase.
Claims7
A process for preparing 1,1-difluoro-1,4-dichlorobutane comprising reacting 1,1,1,4-tetrachlorobutane or 1,1,4-trichlorobut-1-ene with hydrogen fluoride in the vapour phase.
Dependencies are inferred from the claim text.