How is Pentadecafluorooctanoyl chloride (CAS: 335-64-8) typically synthesized?

Pentadecafluorooctanoyl chloride is usually synthesized by reacting pentadecafluoro-2-dodecanol with thionyl chloride in the presence of a suitable catalyst, such as aluminum chloride. The reaction is conducted in an inert atmosphere to prevent oxidation of the fluorinated alcohol. The yield is typically high, and the selectivity towards the desired product is good. The process requires careful handling due to the reactivity and volatility of the starting materials.