Sodium Carbonate → HCID 86653509, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-(5-tert-butylisoxazol-3-yl)-3-[3-(6-iodoquinazolin-4-yloxy)phenyl]urea from the previous step (0.21 g, 0.4 mmol), 5-formylfuran-2-ylboronic acid (0.07 g, 0.51 mmol), bis(triphenylphosphine)palladium(II) dichloride (0.035 g, 0.05 mmol), and 1.0 M Na2CO3 solution (3 mL) in EtOH (2 mL) and 1,2-dimethoxyethane (3 mL) was heated at 55° C. for 1 hour. It was quenched with water and extracted with CH2Cl2. Extracts were dried over MgSO4 and concentrated under reduced pressure. It was purified by silica gel chromatography with 30-60% EtOAc/hexane as eluants to afford 1-(5-tert-butylisoxazol-3-yl)-3-{3-[6-(5-formylfuran-2-yl)quinazolin-4-yloxy]phenyl}urea as solid (0.172 g, 87%). 1H NMR (300 MHz, CDCl3) δ 9.75 (s, 1H), 9.53 (br, 1H), 8.80 (d, 1H), 8.78 (s, 1H), 7.32 (dd, 1H), 8.07 (d, 1H), 7.67 (m, 2H), 7.34-7.54 (m, 3H), 7.07 (d, 1H), 7.01 (d, 1H), 5.94 (s, 1H), 1.32 (s, 9H); LC-MS (ESI) m/z 498 (M+H)+.

Provenance & Evidence