File talk:Thiol-yne-reaction.svg
Incorrect thiol-yne regiospecificity
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The second thiol does not add at the site shown, and does not produce a dithioacetal. I base this on the absence of citations that indicate this orientation, and the presence of structures in the literature that show the opposite, e.g., in http://onlinelibrary.wiley.com/doi/10.1002/anie.201000401/abstract
