Complexes of ruthenum, method for their preparation, and their application in olefin metathesis reactions
申请人:Grela Karol Leslaw
公开号:US09074028B2
公开(公告)日:2015-07-07
The present invention provides new ruthenium complexes of Formula (1), which contain a chelate ring created by a halogen atom X. The invention concerns also a method for the preparation of the new ruthenium complexes and their application in metathesis reactions.
Coordination, not insertion: New ruthenium benzylidenes with a chelating halogen atom were easily prepared and showed excellent stability and activity as metathesis catalysts (see figure). Structure–activity studies reveal that strength of the ruthenium–halogen interaction can be tuned across a wide range to set up a family of latent to active catalysts.