Patent ID: 8937204
Filing Date: 2015-01-20
Classification: C07B,C07C

Abstract:
1. A method for isolating a fluorinated product from a byproduct where the fluorinated product results from fluorination with 4-tert-butyl-2,6-dimethylphenylsulfur trifluoride: the method comprising: in the presence of the fluorinated product, converting the byproduct having a formula (I) to a sulfinate ester having a formula (V), and then to a sulfonate ester having a formula (VI), and then to a sulfonate salt having a formula (IV); in which: R is alkyl group having 1 to 4 carbon atoms and M is a hydrogen atom, a metal atom or an ammonium moiety; and wherein the fluorinated product is isolated from the byproduct by utilizing physical property differences between the byproduct and sulfonate salt.