Process for the preparation of octafluoro-(2,2) paracyclophane
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United States of America Patent
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Dec 15, 1998
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N/A
app pub date -
Nov 26, 1997
filing date -
Oct 18, 1995
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Abstract
A process for the preparation of octafluoro-?2,2!paracyclophane includes contacting a reactant selected from the group consisting of 1,4-bis(bromodifluoromethyl)benzene (dibromide), 1,4-bis(chlorodifluoromethyl)benzene (dichloride), and 1,4-bis(iododifluoromethyl)benzene (diiodide) with trimethylsilyltributyltin (TMSTBT) (a reducing agent) and fluoride ions in a refluxing solution of hexamethylphosphoramide (HMPA) or dimethylsulfoxide (DMSO) in tetrahydrofuran (THF) at conditions effective to promote a reaction product comprising octafluoro-?2,2!paracyclophane.
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