Reaction of 1a with different aryl thiols afforded the corresponding products 2f-i. Electron donating groups on the arylthiol favoured the addition whereas electron poor 4-chloro-thiophenol required excess of thiol and only 20% of the desired product 2g was obtained. Reaction with alkyl thiols afforded 2h and 2i in good yields (85 and 70% respectively). Noteworthy, if the reaction is performed using NaOMe as base, the addition of the alkoxide to the enone yields the corresponding 4-hydroxy-cyclopentenone in 54% yield (See Supporting info).