Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Journal of Organic Chemistry called Probing the Efficiency of N-Heterocyclic Carbene Promoted O- to C-Carboxyl Transfer of Oxazolyl Carbonates, Author is Thomson, Jennifer E.; Campbell, Craig D.; Concellon, Carmen; Duguet, Nicolas; Rix, Kathryn; Slawin, Alexandra M. Z.; Smith, Andrew D., which mentions a compound: 286014-53-7, SMILESS is CC1=C([N+]2=CN(C3=C(C)C=C(C)C=C3C)C=C2)C(C)=CC(C)=C1.F[B-](F)(F)F, Molecular C21H25BF4N2, Synthetic Route of C21H25BF4N2.
Screening a range of azolium salts, bases and solvents for reactivity indicates that triazolinylidenes, generated in situ with KHMDS in THF, promote the Steglich rearrangement of oxazolyl carbonates I (R1 = 4-MeOC6H4; R2 = Me, Me2CH, Me2CHCH2, MeSCH2CH2, Ph, PhCH2; R3 = Me, Me2CH, Cl3CCMe2, Ph, PhCH2, PhCH2CHMe, Me2CHCHMe) to [alkoxy(or aryloxy)carbonyl]oxazolones II with high catalytic efficiency (typical reaction time 5 min at <1.5 mol % NHC). This protocol shows wide substrate applicability, even allowing the efficient generation of vicinal quaternary centers. An improved exptl. procedure is also described that allows a simplified one-pot reaction protocol to be employed with similarly high catalytic efficiency. Here is just a brief introduction to this compound(286014-53-7)Synthetic Route of C21H25BF4N2, more information about the compound(1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate) is in the article, you can click the link below.
Reference:
Bromide – Wikipedia,
bromide – Wiktionary