Piperidine → tert-butyl 4-[[(2Z)-6-methoxy-2-[[5-(2-morpholin-4-ylethoxy)-2H-indazol-3-yl]methylidene]-3-oxo-1-benzofuran-7-yl]methyl]piperazine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

A solution of 5-(2-morpholinoethoxy)-1H-indazole-3-carboxaldehyde (0.0163 g, 0.0592 mmol) in methanol (0.5 mL) was added with tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.0172 g, 0.0493 mmol) and piperidine (0.00335 g, 0.0394 mmol), and the mixture was stirred at 60° C. for 3 hours. The reaction mixture was concentrated, and the resulting residue was purified by silica gel column chromatography (chloroform/methanol) to obtain tert-butyl (Z)-4-[(6-methoxy-2-{[5-(2-morpholinoethoxy)-1H-indazol-3-yl]methylene}-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.0303 g, 99%).

Provenance & Evidence