Sodium Hydroxide → 2-(4-(4-aminopiperidin-1-yl)phenyl)-5,7-dimethoxyquinazolin-4(3H)-one

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Reaction Steps

A mixture of N-(1-(4-(5,7-dimethoxy-4-oxo-3,4-dihydroquinazolin-2-yl)phenyl)piperidin-4-yl)acetamide (0.250 g, 0.59 mmol) and 2 M HCl (20 mL) was heated at reflux for 24 hours. The mixture was basified with 2 M NaOH to pH 8, extracted with CH2Cl2 (3×150 mL), dried over anhydrous MgSO4, filtered, and concentrated to afford 2-(4-(4-aminopiperidin-1-yl)phenyl)-5,7-dimethoxyquinazolin-4(3H)-one as a yellow solid (0.215 g, 96%).

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