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  4. Phenol can be converted into salicyladehyde by:

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Q. Phenol can be converted into salicyladehyde by:

BHUBHU 2004

Solution:

Phenol can be converted into salicylaldehyde by Riemer-Tiemann reaction .
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Etard reaction-Converts toluene into benzaldehyde
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Perkin's reaction
Benzaldehyde $+$ acid anhydride $\xrightarrow[{\text { acid }}]{\text { Salt of }}\alpha, \beta$-unsaturated acid
Cannizaro reaction-This reaction is shown by aldehydes which do not have $\alpha$-hydrogen atom. It is a disproportionation reaction.
$2 HCHO \xrightarrow{50 \% NaOH } HCOONa + CH _{3} OH$