Process for the preparation of 1,1,2,2-tetrahydroperfluoroalkanols and their esters
AssigneeSociete Atochem
InventorsAndre Lantz, Pascal Michaud
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Abstract
The invention relates to the synthesis of 1,1,2,2-tetrahydroperfluoroalkanols and their esters by oxidizing a 2-(perfluoroalkyl)ethyl iodide using hydrogen peroxide in a carboxylic acid or carboxylic acid ester in the presence of sulphuric acid. In the process according to the invention, from 1 to 30 moles of sulphuric acid, from 1 to 50 moles of carboxylic acid or of an ester of such an acid, and from 3 to 20 moles of hydrogen peroxide per mole of 2-perfluoralkyl)ethyl iodide are used.
Claims8
A process for the preparation of 1,1,2,2-tetrahydroperfluoroalkanols and their esters comprising oxidizing a 2-(perfluoroalkyl)ethyl iodide using hydrogen peroxide in a carboxylic acid or an ester of such an acid and in the presence of sulphuric acid, and using from 1 to 30 moles of sulphuric acid, from 1 to 50 moles of carboxylic acid or of an ester of such an acid, and from 3 to 20 moles of hydrogen peroxide, all per mole of 2-(perfluoroalkyl)ethyl iodide.
Dependencies are inferred from the claim text.