The catalytic performance of NHC-ligated Ru-indenylidene or benzylidene complexes bearing a tricyclohexylphosphine or a pyridine ligand in ring closing metathesis (RCM), cross metathesis, and ring closing enyne metathesis (RCEYM) reactions is compared. While the PCy3 complexes perform significantly better in RCM and RCEYM reactions than the pyridine complex, all catalysts show similar activity in cross metathesis reactions.
NHC配体的Ru-茚基亚甲基或苄基亚甲基配合物,在环闭合甲基转移(RCM)、交叉甲基转移和环闭合炔烯甲基转移(RCEYM)反应中的催化性能进行了比较。尽管PCy3配合物在RCM和RCEYM反应中表现明显优于吡啶配合物,但所有催化剂在交叉甲基转移反应中显示出类似的活性。