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We present herein the regioselective hydration of electron–rich aryl-alkynes in presence of a Schrocktype molybdenum alkylidene catalyst. The structures of the obtained ketones were confirmed by NMR spectroscopy and HRMS as well as by single-crystal X-ray diffraction. We found out that in our conditions the hydration reaction is efficient only for aryl-alkynes and their reactivity is highly dependent on the electronic nature of the substituents on the aryl group.

Selective hydration of electron-rich aryl-alkynes by a Schrock-type molybdenum alkylidene catalyst