Aldehydes and Ketones - Result Question 74
####85. Write down the reactions involved in the preparation of the following using the reagents indicated against in parenthesis: “Acetoxime from acetaldehyde.”
$$ \left[K _2 Cr _2 O _7 / H^{+}, Ca(OH) _2 \text { and } NH _2 OH, HCl\right] $$
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Solution:
- $CH _3 CHO \underset{K _2 Cr _2 O _7}{\stackrel{H^{+}}{\longrightarrow}} CH _3 COOH \xrightarrow{Ca(OH) _2}\left(CH _3 COO\right) _2 Ca$
$\left(CH _3 COO\right) _2 Ca \xrightarrow{\text { heat }} CH _3-\stackrel{O}{C}-CH _3 \xrightarrow{H _2 NOH}$
$\underset{H _3 C}{H _3 C}>C=\underset{\text { acetoxime }}{N-OH}$
