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It is used chiefly in the synthesis of other organic
compounds, ranging from pharmaceuticals to plastic additives and
benzaldehyde is an important intermediate for the processing of fragrance
and flavoring compounds and in the preparation of certain aniline dyes.
It is the first step in the synthesis for fragrances. It undergoes
simultaneous oxidation and reduction with alcoholic potassium hydroxide,
giving potassium benzoate and benzyl alcohol. It is converted to benzoin
with alcoholic potassium cyanide, with anhydrous sodium acetate and
acetic anhydride, giving cinnamic acid.
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