A new type of substrate, the haloalkyne family, has been used in the displacement process. Under mild conditions, eg,-25'in dimethylformamide, nucleophilic displacement on these halides by sodium thiolates has proved to be surprisingly facile. This constitutes a new and convenient route to acetylenic ethers deriving from both aryl and alkyl thiolates. Three interesting diversions from this route are noted: the haloalkyne may enter into oxidation- ...