Insights into the synthesis of hexaaminobenzene hydrochloride: An entry to hexaazatriphenylenes

•Hexaazatriphenylene derivatives show outstanding optoelectronic properties.•These systems could be easily obtained by hexaaminobenzene-a-diketones condensation.•Synthesis of hexaaminobenzene at laboratory scale displays crucial considerations.•Reproducible and efficient preparation of hexaaminobenze was achieved.•Each synthetic step was analyzed and optimized.