Piperidine → tert-butyl (Z)-4-({2-[(1H-pyrrolo[2,3-b]pyridin-3-yl)methylene]-6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

A solution of tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.107 g, 0.295 mmol) synthesized in Example A40, Step 1 in methanol (1.2 mL) was added with 7-aza-1H-indole-3-carboxaldehyde (0.0517 g, 0.354 mmol) and piperidine (0.00251 g, 0.0295 mmol), and the mixture was stirred at 60° C. for 2 hours. The reaction mixture was cooled to room temperature, and then the precipitated solid was collected by filtration to obtain the objective tert-butyl (Z)-4-({2-[(1H-pyrrolo[2,3-b]pyridin-3-yl)methylene]-6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate (0.0654 g, 45%).

Provenance & Evidence