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ChemicalBook CAS DataBase List Piracetam
7491-74-9

Piracetam synthesis

10synthesis methods
Prepared by condensing 2-pyrrolidinone with ethyl chloroacetate in the presence of a metal hydride and then converting the ester into an amide with ammonia.
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Yield:7491-74-9 45.94%

Reaction Conditions:

with ammonia in methanol at 60; for 4 h;

Steps:

69 Synthesis of compound 69.3.

Mixture of compound 69.2 (4.5g, 28.66mmol, 1.0eq) and methanolic ammonia (50ml) was stirred at 60°C for 4h. After completion of reaction, reaction mixture was concentrated under reduced pressure and triturated with diethyl ether to obtain 69.3. (1.87g, Yield: 45.94%). MS(ES): m/z 143.08 [M+H] +.

References:

WO2020/112937,2020,A1 Location in patent:Paragraph 00766-00767

Piracetam Related Search:

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