| 摘要 |
A residual amount of hydrazine present in an acethydrazide solution prepared by condensing hydrazine with ethyl acetate is treated by either reaction with carbon dioxide or oxidation with air in the presence of palladium or platinum catalyst. Treatment of said acid hydrazide solution in the foregoing manner obviates the catalyst poisoning potential of the unreacted hydrazine upon subsequent reductive methylation of the hydrazide solution in the presence of palladium or platinum catalyst.
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