Hydrochloric Acid → 2-(1,4'-Bipiperidin-1'-yl)benzo[d]oxazole-5-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

Methyl 2-(1,4′-bipiperidin-1′-yl)benzo[d]oxazole-5-carboxylate (Example 94, 220 mg, 0.641 mmol) and potassium hydroxide were combined in a mixture of tetrahydrofuran, methanol, and water (9:1:1, 7 mL) and stirred at 40° C. overnight. The mixture was neutralized with concentrated hydrochloric acid, concentrated under reduced pressure, and triturated with chloroform to afford the title compound. MS (ESI+) m/z 330.2 (M+H)+.

Provenance & Evidence