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A rapid synthesis of the title compounds employing formaldehyde and sodium borohydride in acidic aqueous solution in combination with the unmethylated amines is described. High yields and the characteristics of the methylated amines allow the application of the method to gas chromatographic and mass spectrometric analyses.

Notizen: Facile Synthesis of N-Permethylspermine and N-Permethylspermidine from their Unmethylated Precursors