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ChemicalBook CAS DataBase List Methyl piperazine-1-carboxylate hydrochloride
873697-75-7

Methyl piperazine-1-carboxylate hydrochloride synthesis

3synthesis methods
1-tert-Butyl 4-Methyl piperazine-1,4-dicarboxylate

219509-79-2

Methyl piperazine-1-carboxylate hydrochloride

873697-75-7

The general procedure for the synthesis of methyl 1-piperazine carboxylate hydrochloride from 4-methylpiperazine-1,4-dicarboxylic acid-1-tert-butyl ester was as follows: 1-tert-butoxycarbonyl-2,4-piperazine carboxylate (0.18 g, 0.61 mmol) was dissolved in dichloromethane (6 mL), and an ethyl acetate solution of HCl (4 M, 3 mL) was slowly added. The reaction mixture was stirred at room temperature for 1 hour. Upon completion of the reaction, the solvent was removed by distillation under reduced pressure to afford the white solid product 1,3-piperazinedicarboxylic acid hydrochloride (146 mg) in 99% yield.

219509-79-2 Synthesis
1-tert-Butyl 4-Methyl piperazine-1,4-dicarboxylate

219509-79-2
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$129.00/100mg

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Yield:873697-75-7 99%

Reaction Conditions:

with hydrogenchloride in dichloromethane;ethyl acetate at 20; for 1 h;

Steps:

12.1 Synthesis of compound piperazine-1,3-carboxylate hydrochloride

The compound 1-tert-butoxycarbonyl-2,4-piperazine carboxylate (0.18g, 0.61mmol) in dichloromethane(6mL) was added HCl in ethyl acetate solution (4M, 3mL), stirred at rt for 1h, the solvent was removed to give awhite solid 146mg: 1,3-piperazine compound Two carboxylate hydrochloride, yield: 99%.

References:

CN105399698,2016,A Location in patent:Paragraph 0618; 0622; 0623