Potassium Carbonate → 5-Chloro-3-(2-fluorophenyl)-2-(9H-purin-6-ylsulfanylmethyl)-3H-quinazolin-4-one

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Prepared according to Procedure C using Intermediate 2k (210 mg, 0.650 mmol), 6-mercaptopurine monohydrate (122 mg, 0.715 mmol), K2CO3 (99 mg, 0.715 mmol), and DMF (4 mL). The crude product was recrystallized from EtOH to provide 240 mg of an off-white solid (84%), mp 244.0° C. 1H NMR (DMSO-d6) δ: 13.56 (br s, 1H); 8.50 (s, 1H); 8.45 (s, 1H); 7.81 (t, J=8.0 Hz, 1H); 7.74 (t, J=7.7 Hz, 1H); 7.67 (d, J=8.1 Hz, 1H); 7.62 (d, J=7.7 Hz, 1H); 7.46-7.55 (m, 1H); 7.29-7.42 (m, 2H); 4.47-4.59 (m, 2H). 13C NMR (DMSO-d6) ppm: 158.4, 157.3 (d, J=249 Hz), 156.4, 153.8, 151.0, 149.1, 143.2, 135.0, 132.9, 131.8 (d, J=8.0 Hz), 130.8, 129.9, 126.7, 125.3 (d, J=3.5 Hz), 123.6 (d, J=13 Hz), 117.0, 116.2 (d, J=19 Hz), 31.7. MS (ES): m/z 439.0 (M+). Anal. calcd. for C20H12ClFN6OS: C, 54.74; H, 2.76; Cl, 8.08; N, 19.15; S, 7.31. Found: C, 54.42; H, 2.88; Cl, 8.08; N, 18.87; S, 7.08.

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