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ChemicalBook CAS DataBase List 1-Piperazineaceticacid,4-ethyl-(9CI)
672285-91-5

1-Piperazineaceticacid,4-ethyl-(9CI) synthesis

4synthesis methods
-

Yield:672285-91-5 54.5%

Reaction Conditions:

with hydrogenchloride in water at 95; for 16 h;

Steps:

24.b b) 2-(4-Ethylpiperazin-l-yl)acetic acid

b) 2-(4-Ethylpiperazin-l-yl)acetic acidThe solution of ethyl 2-(4-ethylpiperazin-l-yl)acetate (1.3 g, 6.50 mmol, 1.0 eq) in 8 N HC1 stirred at 95 °C for 16 h. The mixture was concentrated on vacuum pump, and quenched and extracted as in Intermediate Example 15(b). The solvent was distilled off to afford the product in 54.5 % yield (0.6 g).

References:

WO2013/53983,2013,A1 Location in patent:Page/Page column 43

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