In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Copper-promoted N-arylation of the imidazole side chain of protected histidine by using triarylbismuth reagents, published in 2021-09-20, which mentions a compound: 7524-52-9, Name is H-Trp-OMe.HCl, Molecular C12H15ClN2O2, Electric Literature of C12H15ClN2O2.
The N-arylation of the side chain of histidine by using triarylbismuthines is reported. The reaction is promoted by copper(II) acetate in dichloromethane at 40°C under oxygen in the presence of diisopropylethylamine and 1,10-phenanthroline and allows the transfer of aryl groups with substituents at any position of the aromatic ring. The reaction shows excellent functional group tolerance and is applicable to dipeptides where the histidine is located at the N terminus. A histidine-guided backbone N-H arylation was observed in dipeptides where the histidine occupies the C terminus.
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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem