Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 286014-53-7, is researched, Molecular C21H25BF4N2, about N-heterocyclic carbene enabled rhodium-catalyzed ortho C(sp2)-H borylation at room temperature, the main research direction is arylpyridine directed ortho borylation rhodium NHC catalyst preparation arylboronate; arylboronate pyridyl substituted preparation directed ortho boration arylpyridine.Application of 286014-53-7.
We report a rhodium-catalyzed ortho C(sp2)-H borylation of 2-phenylpyridines using com. available N-heterocyclic carbenes (NHCs) as ligand and pinacolatodiboron (B2pin2) as borylating reagent. The reaction could take place at room temperature, tolerating a wide range of functionalities and affording ortho borylated products in moderate to excellent yields. The current method is also applicable to gram-scale reaction with reduced catalyst loading.
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Reference:
Bromide – Wikipedia,
bromide – Wiktionary