Synthesis and Catalytic Properties of Sulfur-Chelated Ruthenium Benzylidenes Bearing a Cyclic (Alkyl)(amino)carbene Ligand Illya Rozenberg Or Eivgi Alexander Frenklah Danielle Butilkov Sebastian Kozuch Israel Goldberg N. Gabriel Lemcoff 10.1021/acscatal.8b02122.s001 https://acs.figshare.com/articles/journal_contribution/Synthesis_and_Catalytic_Properties_of_Sulfur-Chelated_Ruthenium_Benzylidenes_Bearing_a_Cyclic_Alkyl_amino_carbene_Ligand/6946154 Sulfur-chelated ruthenium olefin metathesis precatalysts that possess cyclic (alkyl)­(amino)­carbenes (CAAC) can benefit from the synergetic effect of both ligands. Changing the steric bulk of the CAAC ligand by using different substitution patterns was shown to affect the geometry of the complexes produced and determined whether the complexes could be catalytically dormant. The <i>cis</i>-dichloro latent catalysts could be activated both by heat or light, even in the visible region, for representative acyclic diene metathesis and ring-opening metathesis polymerization reactions, olefin cross-metathesis, and ring-closing metathesis without isomerization byproducts. Thus, these complexes were shown to combine the uniqueness of CAAC-containing Ru olefin metathesis catalysts with the advantage of the thermal and photolatency imposed by sulfur chelation of the benzylidene. 2018-08-06 00:00:00 synergetic effect ring-closing metathesis Sulfur-Chelated Ruthenium Benzylidenes Bearing substitution patterns CAAC-containing Ru olefin metathesis catalysts Catalytic Properties isomerization byproducts complex ring-opening metathesis polymerization reactions representative acyclic diene metathesis olefin cross-metathesis CAAC ligand steric bulk sulfur chelation