N-Hydroxyacetamidine → N-ethanimidoyl-3-[2-methoxy-6-[2-(4-methoxyphenyl)ethylamino]pyrimidin-4-yl]benzamide

Beteiligte Stoffe

Reaktionsschritte

To a solution of 3-{2-methoxy-6-[2-(4-methoxy-phenyl)-ethylamino]-pyrimidin-4-yl}-benzoic acid (200 mg, 0.53 mmol, Example 35(a)] in dimethylformamide (1.75 mL) is added diisopropylethylamine (0.23 mL, 1.33 mmol) followed by TBTU (205 mg, 0.64 mmol). Stirred the solution for 15 minutes before adding acetamide oxime (59 mg, 0.8 mmol). After 4 hours of stirring at ambient temperature the mixture is diluted with water (20 mL) and extracted twice with EtOAc (20 mL). The combined organic extracts are washed three times with water (20 mL), with brine (20 mL), dried over magnesium sulfate, filtered and concentrated by rotary evaporator to provide N-(1-imino-ethyl)-3-{2-methoxy-6-[2-(4-methoxy-phenyl)-ethylamino]-pyrimidin-4-yl}-benzamide [60 mg, 69%, Intermediate (45)].

Herkunft & Nachweise