Cesium carbonate → HCID 91100048, compound

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Reaction Steps

After a mixture of 1-(4-fluoro-3-hydroxyphenyl)-3-(1-phenyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)urea (0.22 g, 0.58 mmol) and Cs2CO3 (0.325 g, 1 mmol) in THF (10 mL) was stirred at room temperature for 1 hour, to it was added 4-chloro-6,7-dimethoxyquinazoline (0.13 g, 0.58 mmol). It was stirred at 40° C. for 14 hours. The mixture was quenched by water and extracted with DCM. Extracts were dried over MgSO4 and concentrated. It was purified on a silica gel column using a mixture of EtOAc-hexane as eluent to give 14346,7-dimethoxyquinazolin-4-yloxy)-4-fluorophenyl)-3-(1-phenyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)urea (0.064 g, 19% yield). 1H NMR (300 MHz, DMSO-d6) δ 3.99 (s, 3H), 4.00 (s, 3H), 6.87 (s, 1H), 7.24 (m, 1H), 7.36 (t, 1H), 7.42 (s, 1H), 7.59 (m, 6H), 7.67 (dd, 1H), 8.56 (s, 1H), 8.83 (s, 1H), 9.32 (s, 1H); LC-MS (ESI) m/z 569 (M+H)+.

Provenance & Evidence