First, we selected a set of Hoveyda-Grubbs type catalysts Ru10-Ru16, which are known for their high activity and stability, and we hoped that these characteristics would transfer to the posterior complexes. These compounds were used in reactions with zinc salt 1 and produced the desired catalysts Ru17-Ru23 according to the known protocol (Scheme 1, see SI for details). In all cases the complete conversion was observed. For the SIMes-based Ru10 (known as Umicore M51) and Ru12, the yields of the resulting products Ru17 and Ru19 were 74 and 57%, respectively, and for their SIPr