Hydrochloric Acid → 1-Methyl-2-oxopyrrolidine-3-carboxylic acid

Participants

Reaction Steps

A 250 mL round-bottomed flask was charged with methyl 1-methyl-2-oxopyrrolidine-3-carboxylate (1.89 g, 12.0 mmol), potassium trimethylsilanolate (4.64 g, 36.1 mmol), and THF (100 mL). The reaction mixture was stirred at room temperature overnight, then HCl (50 mL, 2.0 M in Et2O) was added and the reaction mixture was stirred for 5 minutes. The solid was removed by filtration and the filtrate concentrated to give the crude product 1.28 g (74.2%), which was used in the next step without further purification. 1H NMR (400 MHz, CDCl3) δ 3.40-3.49 (m, 3H), 2.94 (s, 3H), 2.37-2.47 (m, 2H).

Provenance & Evidence