bisphenol AF → 1,1'-(1,1,1,3,3,3-Hexafluoropropane-2,2-diyl)bis(4-chlorobenzene)

Participants

Reaction Steps

To a slurry of triphenylphosphine dichloride (0.2 moles) in dichloromethane (250 ml) under argon is added 2,2-bis(4-hydroxyphenyl)hexafluoropropane (0.1 mole). The solvent is removed by distillation to form an essentially solid reaction mixture in the reaction vessel. The reaction vessel is heated in a molten metal bath to form a molten reaction mixture and the mixture agitated for approximately four hours before cooling to obtain a solid reaction product. The resulting solid is dissolved in dichloromethane and washed first with dilute sodium hydroxide and second with deionized water. The resulting organic fraction is collected and purified passing it through a silica gel chromatographic column using hexane as the eluting solvent. The hexane is removed from the eluate with a rotary evaporator to yield 2,2-bis(4-chlorophenyl)hexafluoropropane.

Provenance & Evidence