Computed Properties of C21H25BF4N2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate, is researched, Molecular C21H25BF4N2, CAS is 286014-53-7, about Synthesis of N-heterocyclic carbene ligands and derived ruthenium olefin metathesis catalysts. Author is Bantreil, Xavier; Nolan, Steven P..
The paper described the synthesis of commonly used free N-heterocyclic carbenes (NHCs), 1,3-bis-(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) and 1,3-bis-(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr), and of the two corresponding ruthenium-based metathesis complexes. The complex containing IMes was found to be highly efficient in macrocyclizations involving ring-closing metatheses (RCM), whereas the complex featuring the IPr ligand shows excellent activity in both RCM and cross metathesis because of its greater stability. The free carbenes IMes and IPr are isolated in four steps, with an overall yield of ∼50%. They are then used to replace a labile phosphine in precatalysts belonging to two families of ruthenium-containing complexes, benzylidene and indenylidene types, resp. Such complexes are isolated as anal. pure compounds with 77% and 95% yield. The total time for the synthesis of the free NHCs is 56 h, and incorporation in complexes requires an addnl. 4-5 h.
《Synthesis of N-heterocyclic carbene ligands and derived ruthenium olefin metathesis catalysts》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate)Computed Properties of C21H25BF4N2.
Reference:
Bromide – Wikipedia,
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