Browsing by Author "Xie, Yu"
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Item Solid Supported Ruthenium Complexes for Olefin Metathesis(2013) Hamad, Fatma B.; Kai, Cheng; Cai, Yuan; Xie, Yu; Lu, Yin; Ding, Fu; Sun, Yaguan; Verpoort, FrancisImmobilization of ruthenium metathesis catalysts on solid supports has attracted much attention in recent years since it opens up the possibility for easy catalyst–product separation and catalyst reuse as well as reduction of the residual ruthenium content in the organic product. The state of the art on immobilization of ruthenium based metathesis initiators on solid supports is surveyed in this review. In addition, a comparison of the performance of the heterogenized catalysts with homogeneous analogues is made.Item Synthesis and Characterization of Non-Chelating Ruthenium–Indenylidene Olefin Metathesis Catalysts Derived From Substituted 1,1-Diphenyl-2-Propyn-1-Ols(2015) Yeates, Baoyi; Xie, Yu; Hamad, Fatma B.; Leus, Karen; Lyapkov, Alex A.; Van Hecke, Kristof; Verpoort, FrancisWe report on the synthesis and characterization of the first generation of modified non-chelating indenylidene ruthenium catalysts denoted as RuCl2(4-methyl-3-(o-tolyl)-1-indenylidene)(PCy3)2 5a, RuCl2(3-(p-fluorophenyl)-1-indenylidene)(PCy3)2 5b, RuCl2(3-(2,6-xylyl)-1-indenylidene)(PCy3)2 5c and RuCl2(3-(1-naphthyl)-1-indenylidene)(PCy3)2 5d. The obtained complexes of 5a–d were characterized by means of NMR spectroscopy and elemental analysis. Moreover the structures of 5a–d were confirmed by single-crystal X-ray diffraction and compared with the standard ruthenium indenylidene complex 3 and the chelating benzylidene complex 2. Additionally, the catalytic performances of the obtained complexes 5a–d were evaluated in various metathesis reactions demonstrating that the ring-closing metathesis (RCM) and ring-opening metathesis polymerization (ROMP) reactions revealed a similar catalytic activity in comparison with the reference indenylidene catalyst 3.