In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Bifunctional N-aminopyridinium reagents enable C-H amination, olefin carboamination cascades, published in 2021, which mentions a compound: 57825-30-6, mainly applied to bifunctional aminopyridinium reagent carbon hydrogen amination; tetrahydroisoquinoline preparation olefin carboamination aminopyridinium, Electric Literature of C9H11Br.
C-H amination reactions provide streamlined access to nitrogen-containing small mols. Here, we disclose benzylic C-H amination with N-aminopyridiniums, which are bifunctional reagents that provide avenues for further diversification. Reductive activation of the incipient N-N bonds unveils electrophilic N-centered radicals, which can be engaged by nucleophilic partners such as olefins, silyl enol ethers, and electron-rich eterocycles. We highlight the synthetic potential of these sequences in the synthesis of tetrahydroisoquinolines, which are important heterocycles in mol. therapeutics, via anti-Markovnikov olefin carboamination. Unlike many C-H amination reactions that provide access to protected amines, the current method installs an easily diversifiable synthetic handle that serves as a lynchpin for C-H amination, deaminative N-N functionalization sequences.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider