The use of a copper catalyst and the proline-derived ligand, (2S,4R)-4-hydroxy-N-(2-methylnaphthalen-1-yl)pyrrolidine-2-carboxamide (HMNPC) has been used in the S-arylation of sulfinates with aryl iodides under mild conditions. The sulfinate salts of SMOPS, TBS-R, and Rongacyl are all known. PMB-R and oNB-R sulfinate salts were made from the corresponding chloromethyl ether in a facile manner on gram scale (see Supporting Information). The resulting solids were shelf stable (2+ months), non-hygroscopic powders.