Hydrochloric Acid → 1-[8-(Ethoxycarbonyl)-8-azabicyclo[3.2.1]oct-3-yl]-4-methoxypiperidine-4-carboxylic acid

Participants

Reaction Steps

Isomer 1 of ethyl 3-[4-methoxy-4-(methoxycarbonyl)piperidin-1-yl]-8-azabicyclo[3.2.1]octane-8-carboxylate (0.097 g, 0.27 mmol) was dissolved in THF (5 mL) at rt and 1 M LiOH sol. (0.3 mL) was added. The reaction mixture was stirred at rt for 7 days. The pH was carefully adjusted to pH 6 by addition of concentrated hydrochloric acid, the solvents were removed in vacuo, to give 1-[8-(ethoxycarbonyl)-8-azabicyclo[3.2.1]oct-3-yl]-4-methoxypiperidine-4-carboxylic acid (0.093 g, 100%) as an off white solid.

Provenance & Evidence