So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Khan, Misbahul Ain; Ferreira de Rocha, Joao researched the compound: 4-Chloro-8-methylquinoline( cas:18436-73-2 ).Reference of 4-Chloro-8-methylquinoline.They published the article 《Tricyclic heteroaromatic ring systems. II. A convenient synthesis of 1H-pyrrolo[3,2-c]quinolines》 about this compound( cas:18436-73-2 ) in Journal of Heterocyclic Chemistry. Keywords: pyrroloquinoline; quinolinyl hydrazone cyclization. We’ll tell you more about this compound (cas:18436-73-2).
Quinol-4-yl hydrazones I (R = H, Me, Et; R1 = Me, Ph, Et; RR1 = (CH2)n, n = 3, 4; R2 = H, Me; R3 = H, 6-, 7-, 8-Cl, 6-, 7-, 8-Me, 6-, 7-, 8-MeO) on heating in high boiling solvents undergo cyclizations to give 1H-pyrrolo[3,2-c]quinolines II in good yields. Some of these I were alkylated to provide their N-alkyl derivatives
From this literature《Tricyclic heteroaromatic ring systems. II. A convenient synthesis of 1H-pyrrolo[3,2-c]quinolines》,we know some information about this compound(18436-73-2)Reference of 4-Chloro-8-methylquinoline, but this is not all information, there are many literatures related to this compound(18436-73-2).
Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia