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4-Piperidinone : ウィキペディア英語版 | 4-Piperidinone
|Section2= |Section7= |Section8= }} 4-Piperidinone is a derivative of piperidine with the molecular formula C5H9NO. 4-Piperidone is used as an intermediate in the manufacture of chemicals and pharmaceutical drugs (e.g., fentanyl). ==Piperidones== Piperidones are a class of chemical compounds sharing the piperidone skeleton. A classic named reaction for the synthesis of piperidones is the Petrenko-Kritschenko piperidone synthesis which involves combining an alkyl-1,3-acetonedicarboxylate with benzaldehyde and an amine.〔''Ueber die Condensation von Aceton-dicarbonsäureestern mit Benzaldehyd unter Anwendung von Ammoniak'' P. Petrenko-Kritschenko, N. Zoneff Berichte der deutschen chemischen Gesellschaft Volume 39 Issue 2, Pages 1358 - 1361 1906 〕 This multicomponent reaction is related to the Hantzsch pyridine synthesis.
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