benzoic alcohol changed to fennel ethanoic acid
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Explanation:
To convert benzyl alcohol to 2-phenyl ethanoic acid,
Benzyl alcohol is treated with KI to get benzyl iodide.
PhCH2OH+KI→PhCH2I+KOH
2. Benzyl iodide is heated with KCN.
PhCH2I+KCN→PhCH2CN+KI
3. Benzyl cyanide is reduced with LiAlH4 to get 2-phenylethylamine.
PhCH2CN+2H2→PhCH2CH2NH2
4. The product is treated with HNO2 and hydrolysed.
PhCH2CH2NH2+HNO2→PhCH2CH2OH+N2+HCl
5. The resulting product is now oxidised with K2Cr2O7/H+ to get the corresponding carboxylic acid PhCH2COOH.
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