Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (5): 795-798.

• Articles • Previous Articles     Next Articles

Synthesis and Catalytic Activity of a Two-core Ruthenium Carbene Complex: a Unique Catalyst for Ring Closing Metathesis Reaction

SHAO Ming-bo and WANG Jian-hui*   

  1. Department of Chemistry, College of Science, Tianjin University, Tianjin 300072, P. R. China
  • Received:2010-10-14 Revised:2010-11-19 Online:2011-09-25 Published:2011-09-06
  • Contact: WANG Jian-hui E-mail:wjh@tju.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20872108).

Abstract: The reaction of a ruthenium carbide complex RuCl2(C:)(PCy3)2 with [H(Et2O)x]+[BF4]– at a molar ratio of 1:2 produced a two-core ruthenium carbene complex, {[RuCl(=CHPCy3)(PCy3)]2(μ-Cl)3}+·[BF4]–, in the form of a yellow-green crystalline solid in a yield of 94%. This two-core ruthenium complex is a selective catalyst for ring closing metathesis of unsubstituted terminal dienes. More importantly, no isomerized byproduct was observed for N-substrates when the two-core ruthenium complex was used as the catalyst at an elevated temperature(137 °C), indicating that the complex is a chemo-selective catalyst for ring closing metathesis reactions.

Key words: Ruthenium carbene complex, Ruthenium catalyst, Ring closing metathesis, Two-core