Ethanol → tert-butyl 4-(5-chloro-1H-indol-3-yl)piperidine-1-carboxylate

Participants

Reaction Steps

Platinum(IV) oxide (0.107 g) was added to the suspension of tert-butyl 4-(5-chloro-1H-indol-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate (1.05 g; 3.15 mmol) in the mixture of ethanol (20 mL) and acetic acid (10 mL). After degassing, the mixture was subjected to hydrogenation for 20 hours and was filtered through celite. The filtrate was concentrated under reduced pressure to give 1.03 g (98%) of tert-butyl 4-(5-chloro-1H-indol-3-yl)piperidine-1-carboxylate as a solid.

Provenance & Evidence