Cesium carbonate → HCID 58267954, compound

Participants

Reaction Steps

As described in Example 50 the intermediate 1-(5-tert-butylisoxazol-3-yl)-3-(3-mercaptophenyl)urea described in Example 44A (0.105 g, 0.36 mmol) was reacted with 4-chloro-6-methoxy-7-(2-methoxyethoxy)quinazoline from Example 7A (0.134 g, 0.5 mmol), and Cs2CO3 (0.325 g, 1 mmol) in isopropanol (8 mL) at 70° C. for 4 hours, to afford 1-(5-tert-butylisoxazol-3-yl)-3-{3-[6-methoxy-7-(2-methoxyethoxy)quinazolin-4-ylthio]phenyl}urea as solid. 1H NMR (300 MHz, DMSO-d6) δ 9.58 (s, 1H), 9.00 (s, 1H), 8.69 (s, 1H), 7.84 (m, 1H), 7.51 (m, 1H), 7.44 (t, 1H), 7.37 (s, 1H), 7.34 (s, 1H), 7.28 (m 1H), 6.49 (s, 1H), 4.33 (t, 2H), 4.00 (s, 3H), 3.76 (t, 2H), 3.34 (s, 3H), 1.28 (s, 9H).

Provenance & Evidence