1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → tert-butyl 2-(4-(3-(nicotinamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperazin-1-yl)-2-oxoethylcarbamate

Participants

Reaction Steps

Crude N-(4-(piperazin-1-yl)-1H-pyrrolo[2,3-b]pyri din-3-yl)nicotinamide (0.025 g, 0.058 mmol, see Example 50), 2-(tert-butoxycarbonylamino)acetic acid (0.0111 g, 0.0637 mmol), HOBT-H2O (0.0124 g, 0.0811 mmol) and EDCI (0.0144 g, 0.075 mmol) were placed in DCM (3 mL). DIEA (d 0.742; 0.0504 mL, 0.290 mmol) was then added. The reaction was stirred for 2 hours and quenched with saturated Na2CO3. The mixture was then extracted with DCM. The organic fractions were dried, filtered, and concentrated to give a crude oil that was purified by column chromatography (500:20-500:30) to give tert-butyl 2-(4-(3-(nicotinamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperazin-1-yl)-2-oxoethylcarbamate (0.013 g, 46.8% yield).

Provenance & Evidence