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- W2022385149 abstract "Abstract 2‐Aryl‐4‐piperidones have been synthesized by condensation between an aromatic aldehyde and a β‐aminoketone ethylene ketal, and further cyclization of the resulting iminoketal with dry hydrogen chloride or anhydrous p ‐toluensulfonic acid. Alternatively, reaction of the above iminoketals with methyl fluorosulfonate followed by dry hydrogen chloride treatment and acid hydrolysis gives directly N ‐methyl‐4‐piperidones. The application of these reactions to the synthesis of some 2‐aryl‐3‐acetylpyrrolidine systems is also described." @default.
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- W2022385149 date "1983-05-01" @default.
- W2022385149 modified "2023-10-18" @default.
- W2022385149 title "A novel synthesis of 2-aryl-4-piperidones by mannich cyclization of iminoketals" @default.
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- W2022385149 doi "https://doi.org/10.1002/jhet.5570200319" @default.
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