4-Methylmorpholine → HCID 178485804, compound

Participants

Reaction Steps

To a solution of ({2-[(trans-4-hydroxycyclohexyl)amino]-7-methylquinazolin-8-yl}oxy)acetic acid (1.8 g, 5.4 mmol) in the mixed solvents of DMF (36 mL) and THF (36 mL) were added NMM (2.3 g, 21 mmol), methylamine hydrochloride (0.44 g, 6.5 mmol), HOBt (1.47 g, 11 mmol) and EDCl (2.08 g, 11 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight. TLC(CH2Cl2/MeOH=2:1) indicated the reaction was complete. The mixture was concentrated in vacuo. The residue was taken up with CH2Cl2 (100 mL), washed with 5% aq. Na2CO3 (30 mL×2) and brine. The organic layer was dried over anhydrous Na2SO4 and concentrated in vacuo to give the crude product. The crude product was purified by silica gel chromatography (CH2Cl2˜CH2Cl2/MeOH=100:1 to CH2Cl2/MeOH=80:1) to give the title compound (1.2 g, 63.2%) as a light yellow solid. 1H NMR (MeOD) δ (ppm) 8.90 (1H, s), 7.39 (1H, d), 7.40 (1H, m), 4.689 (2H, s), 3.84 (1H, m), 3.67 (1H, m), 2.94 (3H, s), 2.40 (3H, s), 2 54 (4H, m), 1.39 (4H, m).

Provenance & Evidence