1-(2-Hydroxyethyl)piperazine → 1-(5-Tert-butylisoxazol-3-yl)-3-(3-(7-(3-(4-(2-hydroxyethyl)piperazin-1-yl)propoxy)-6-methoxyquinazolin-4-yloxy)phenyl)urea

Participants

Reaction Conditions

Reaction Steps

To a solution of (1-(5-tert-butyl-isoxazol-3-yl)-3-{3-[7-(3-chloro-propoxy)-6-methoxy-quinazolin-4-yloxy]-phenyl}-urea from Example 27B (225 mg, 0.427 mmol) in DMF (3 mL) was added 2-piperazin-1-yl-ethanol (0.157 mL, 1.281 mmol) followed by diisopropylethylamine (0.223 mL, 1.281 mmol) and tetrabutylammonium iodide (157.72 mg, 0.427 mmol). The reaction mixture was heated at 60° C. for 2 days. Formation of the product was determined by LCMS. The crude reaction mixture was purified by preparative HPLC (using phenyl-hexyl reverse phase column eluted with gradient of solvent A=0.05% HOAc/H2O and solvent B=0.05% HOAc/CH3CN) to afford 1-(5-tert-butylisoxazol-3-yl)-3-(3-(7-(3-(4-(2-hydroxyethyl)piperazin-1-yl)propoxy)-6-methoxyquinazolin-4-yloxy)phenyl)urea (68 mg, 26%) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 9.45 (brs, 2H), 8.55 (s, 1H), 7.55 (d, 2H), 7.35 (d, 2H), 7.25 (d, 1H), 6.85 (d, 1H), 6.45 (s, 1H), 4.20 (m, 2H), 3.88 (s, 3H), 3.45 (m, 2H), 2.50-2.25 (m, 12H), 2.00 (m, 2H), 1.25 (s, 9H); LC-MS (ESI)m/z 620 (M+H)+.

Provenance & Evidence