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 Photocatalyst- and transition-metal-free α-allylation of N-aryl tetrahydroisoquinolines mediated by visible light, published in 2020, which mentions a compound: 57825-30-6, Name is 1-(Bromomethyl)-4-ethylbenzene, Molecular C9H11Br, Category: quinoxaline.
A convenient and efficient α-allylation of N-aryl tetrahydroisoquinolines I (R = H, 4-Br, 3-Me, 4-Et, etc.) has been achieved. This transformation can be realized under only visible light irradiation without the aid of transition metals or photocatalysts. The mechanism involves a novel in situ-generated electron-donor-acceptor (EDA) complex between the N-aryl tetrahydroisoquinolines I and an allyl or a benzyl bromide R1Br (R1 = 2-methylprop-2-en-1-yl, prop-2-en-1-yl, benzyl, 1-phenylethyl, etc.). Irradiation with purple light triggered single-electron transfer (SET) from the N-aryl tetrahydroisoquinolines I to the allyl or benzyl bromide of the EDA complex, induces the formation of the corresponding allyl or benzyl radical and the subsequent radical-radical coupling. This approach represents the first example of a photocatalyst- and transition-metal-free α-allylic and benzylic functionalization of N-aryl tetrahydroisoquinolines I.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider