The hydrochloride salt of 2-(2-aminophenyl)quinazoline-4-amine, prepared from a quinazolino[3,4-a]quinazoline, was reacted with aromatic aldehydes under conventional heating or microwave irradiation, leading to high yields of tetracyclic dihydroquinazolines.
E. Marinho and M. F. Proença, RSC Adv., 2016, 6, 6138 DOI: 10.1039/C5RA19785F
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