Processes for the preparation of octafluoro-[2,2]paracyclophane

Details Processes for the preparation of octafluoro-[2,2]paracyclophane Processes for the preparation of octafluoro-[2,2]paracyclophane

1995-10-18

1996-07-16

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570143, 570127, C07C 2513

Patent

active

055368921

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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