The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate( cas:286014-53-7 ) is researched.Safety of 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate.Ernst, Johannes B.; Schwermann, Christian; Yokota, Gen-ichi; Tada, Mizuki; Muratsugu, Satoshi; Doltsinis, Nikos L.; Glorius, Frank published the article 《Molecular Adsorbates Switch on Heterogeneous Catalysis: Induction of Reactivity by N-Heterocyclic Carbenes》 about this compound( cas:286014-53-7 ) in Journal of the American Chemical Society. Keywords: azaheterocyclic carbene adsorbate palladium alumina catalyst activation. Let’s learn more about this compound (cas:286014-53-7).
We report the N-heterocyclic carbene (NHC)-induced activation of an otherwise unreactive Pd/Al2O3 catalyst. Surface anal. techniques demonstrate the NHC being coordinated to the palladium particles and affecting their electronic properties. Ab initio calculations provide further insight into the electronic effect of the coordination with the NHC injecting electron d. into the metal nanocluster thus lowering the barrier for bromobenzene activation. By this NHC modification, the catalyst could be successfully applied in the Buchwald-Hartwig amination of aryl chlorides, bromides, and iodides. Various heterogeneity tests could addnl. show that the reaction proceeds via a heterogeneous active species.
In some applications, this compound(286014-53-7)Safety of 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Bromide – Wikipedia,
bromide – Wiktionary