Tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)ethynyl]piperidine-1-carboxylate → Tert-butyl 4-[2-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)ethyl]piperidine-1-carboxylate

Participants

Reaction Steps

A solution of tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)-ethynyl]piperidine-1-carboxylate (0.0721 g, 0.194 mmol) synthesized in Example B55, Step 1 in ethanol (3 mL) was added with 5% palladium/carbon (wetted with 50% water, 0.0700 g), and the mixture was stirred overnight at room temperature under a hydrogen atmosphere. The reaction mixture was filtered through Celite, and the resulting filtrate was concentrated to obtain tert-butyl 4-[2-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)ethyl]piperidine-1-carboxylate (0.0593 g, 81%).

Provenance & Evidence