m-Toluidine → 3-{[4-(4-Amino-6-ethylthieno[2,3-d]pyrimidin-5-yl)phenyl]amino}-4-[(3-methylphenyl)amino]-3-cyclobutene-1,2-dione

Participants

Reaction Steps

A mixture of Example 344A (0.027 g, 0.068 mol) and 3-methylaniline (0.073 mL, 0.68 mmol) in ethanol (2 mL) was stirred at reflux for 48 hours and concentrated. The residue was purified by silica gel chromatography with 5% methanol/dichloromethane to provide 8 mg of the desired product. MS (ESI(+)) m/e 346 (M+H)+; 1H NMR (300 MHz, DMSO-d6) δ 1.17 (t, J=7.46 Hz, 3H); 2.32 (s, 3H); 2.66 (q, J=7.12 Hz, 2H); 6.80-7.00 (m, 2H); 7.20-7.50 (m, 4H); 7.67 (d, J=8.48 Hz, 2H); 8.28 (s, 1H); 10.11 (s, 1H); 10.30 (s, 1H).

Provenance & Evidence