1-Butanol → N-((5-chloro-3-(2-chlorophenyl)quinoxalin-2-yl)methyl)-9H-purin-6-amine

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A mixture of 6-bromopurine (0.4553 g, 2.288 mmol), (5-chloro-3-(2-chlorophenyl)quinoxalin-2-yl)methanamine (0.6959 g, 2.288 mmol), and N,N-diisopropylethylamine (0.7970 mL, 4.576 mmol) in 1-butanol (13.46 mL, 2.288 mmol) was stirred at 100° C. After 3.5 h, the mixture was removed from the heat and concentrated under reduced pressure. The residue was purified by flash column chromatography on a silica gel column using 50% of CH2Cl2:MeOH:NH4OH (89:9:1) in CH2Cl2 as eluent to give a light-yellow solid. The light-yellow solid was suspended in CH2Cl2-Hexane (1:1) and filtered to give N-((5-chloro-3-(2-chlorophenyl)quinoxalin-2-yl)methyl)-9H-purin-6-amine as a light-yellow solid: 1H NMR (400 MHz, DMSO-d6) δ ppm 12.93 (1H, s), 8.02-8.16 (4H, m), 7.95 (1H, br. s.), 7.83-7.90 (1H, m), 7.61-7.72 (2H, m), 7.53-7.59 (1H, m), 7.47-7.53 (1H, m), 4.72-4.98 (2H, m), 89676-20-1-1H-NMR; LC-MS (ESI) m/z 422.0 and 424.0 [M+H]+.

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