The addition of 1,4-benzoquinones can prevent undesirable isomerization in this reaction, one catalyst of which has been modified to use a bidentate isopropoxy methyl benzene ligand originated by Hoyveda.
Highly active catalysts for this reaction have been produced by using triflic acid to generate indenylidene (in-den-ILL-ih-deen) -metal complexes. The addition of 1,4-benzoquinones can prevent undesirable isomerization in this reaction, one catalyst of which has been modified to use a bidentate isopropoxy methyl benzene ligand originated by Hoyveda. Its machanism, which features a [2+2] metallocycloaddition, was proposed by Herison and Chauvin. One pentavalent catalyst for this reaction features trans-chlorine ligands and trans-tricyclohexylphosphine ligands, as well as a benzyl carbene, around a ruthenium center. For 10 points, name this reaction catalyzed by complexes named for Grubbs, which exchanges substituents across the double bonds of certain compounds.
Highly active catalysts for this reaction have been produced by using triflic acid to generate indenylidene (in-den-ILL-ih-deen) -metal complexes.
{olefin metathesis} [accept {ring}-{closing metathesis} and {ring}-{opening metathesis} prior to mention]