Hydrochloric Acid → 1-Carbobenzoxy-4-piperidinecarboxylic Acid

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Reaction Steps

Sodium carbonate (1.59 g, 0.0150 mol) was added to a solution of piperidine-4-carboxylic acid (0.970 g, 0.00751 mol) in water (15 mL). After the solid was dissolved, benzyl chloroformate (1.54 g, 0.00901 mol) was added dropwise. The mixture was stirred at rt for 3 h. The mixture was carefully acidified (pH=4) with 2N HCl, and then was extracted with DCM (4×10 mL). The combined organic layer was dried over Na2SO4, filtered, and concentrated under reduced pressure to give the desired product.

Provenance & Evidence