Diisopropylethylamine → 3-(2-Ethoxypyridin-3-yl)-3-[4-(4-methylpiperazin-1-ylmethyl)phenylamino]-2-oxo-2,3-dihydro-1H-indole-5-carbonitrile

Beteiligte Stoffe

Reaktionsschritte

4-(4-Methyl-piperazin-1-ylmethyl)phenylamine (425 mg, 2.07 mmol) was added to a solution of 3-chloro-3-(2-ethoxypyridin-3-yl)-2-oxo-2,3-dihydro-1H-indole-5-carbonitrile (500 mg, 1.59 mmol) in dichloromethane (50 ml) and DIPEA (0.27 ml, 159 mmol) at 0° C. The reaction mixture was stirred at room temperature for 2 h and then an aqueous NaHCO3 solution was added. The aqueous reaction mixture was extracted with dichloromethane. The combined organic phase was dried over magnesium sulfate, filtered and concentrated at reduced pressure. Purification by chromatography (silica gel, 0-20% methanol in dichloromethane) afforded 791 mg of the title compound (99% yield).

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