A variety of pharmacologically relevant diaryl sulfides (diaryl thioethers) have been isolated as natural products. 1, 1a, 1b, 1c, 1d, 1e, 1f, 1g and 1h Non-natural diaryl sulfides are also of considerable pharmacological relevance. For example, fluorinated diaryl sulfides have been reported to act as serotonin transporter ligands. 2 Most of the known synthetic approaches to diaryl sulfides are based on the formation of a carbon–sulfur bond. Classic syntheses (such as the ...