How is 1-Bromo-1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluorohexane (CAS: 335-56-8) typically synthesized?

1-Bromo-1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluorohexane (CAS: 335-56-8) is synthesized through the reaction of hexafluorocyclohexane with bromine in the presence of a Lewis acid catalyst, such as aluminum bromide. The reaction is typically carried out under an inert atmosphere to prevent decomposition. The yield is high, and the product is isolated by recrystallization from an appropriate solvent, ensuring purity and high-quality final product.