Facile migratory insertion of a N-heterocyclic carbene into a ruthenium− carbon double bond: A new type of reaction of a NHC ligand
E Becker, V Stingl, G Dazinger… - Journal of the …, 2006 - ACS Publications
E Becker, V Stingl, G Dazinger, M Puchberger, K Mereiter, K Kirchner
Journal of the American Chemical Society, 2006•ACS PublicationsThe reaction of [RuCp (IPr i)(CH3CN) 2] PF6 (IPr i= 1, 3-bis (2, 6-diisopropylphenyl) imidazol-
2-ylidene) with HC⋮ CR (R= COOMe, COOEt, COMe) yields the allyl carbene complexes
[RuCp (C (R)-η3-CHC (R) CH− IPr i)] PF6. This conversion involves selective head-to-tail
coupling of two alkynes and an unusual migratory insertion of the N-heterocyclic carbene
into the ruthenium− carbon double bond of a ruthenacyclopentatriene intermediate.
2-ylidene) with HC⋮ CR (R= COOMe, COOEt, COMe) yields the allyl carbene complexes
[RuCp (C (R)-η3-CHC (R) CH− IPr i)] PF6. This conversion involves selective head-to-tail
coupling of two alkynes and an unusual migratory insertion of the N-heterocyclic carbene
into the ruthenium− carbon double bond of a ruthenacyclopentatriene intermediate.
The reaction of [RuCp(IPri)(CH3CN)2]PF6 (IPri = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) with HC⋮CR (R = COOMe, COOEt, COMe) yields the allyl carbene complexes [RuCp(C(R)-η3-CHC(R)CH−IPri)]PF6. This conversion involves selective head-to-tail coupling of two alkynes and an unusual migratory insertion of the N-heterocyclic carbene into the ruthenium−carbon double bond of a ruthenacyclopentatriene intermediate.
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