Piperidine → HCID 86681968, compound

Participants

Reaction Steps

A solution of tert-butyl 4-[(6-hydroxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.0500 g, 0.144 mmol) obtained in Example A16, Step 1 in methanol (0.6 mL) was added with 1-[4-(trifluoromethyl)phenylsulfonyl]-1H-indole-3-carboxaldehyde (0.0509 g, 0.144 mmol) and piperidine (0.00123 g, 0.0144 mmol), and the mixture was stirred overnight at room temperature. The reaction mixture was added with methanol (1 mL), and the solid was suspended in methanol and thereby washed to obtain tert-butyl (Z)-4-([6-hydroxy-3-oxo-2-({1-[4-(trifluoromethyl)phenylsulfonyl]-1H-indol-3-yl}methylene)-2,3-dihydrobenzofuran-7-yl]methyl)piperazine-1-carboxylate (0.0759 g, 77%).

Provenance & Evidence