1-Piperazinecarboxylic acid, ethyl ester → HCID 18918264, compound

Participants

Reaction Steps

To a solution of 1-ethoxycarbonylpiperazine (20 g) and triethylamine (14.1 g) in dichloromethane (200 ml) at 0° C. was added gradually with stirring over 10-15 minutes, methyl bromoacetate (20.3 g). On completion of the addition the reaction mixture was stirred at room temperature for 2 hours, washed with water and brine, dried (MgSO4) and evaporated to yield 1-ethoxycarbonyl-4-methoxycarbonylmethylpiperazine (29.1 g) as a colourless oil: NMR (CDCl3) δ1.28 (3H, t), 2.56 (4H, m), 3.25 (2H, s), 3.52 (4H, m), 3.72 (3H, s), 4.14 (2H, q); m/Z 231 (M+H)+.

Provenance & Evidence