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प्रश्न
How will you convert benzaldehyde into the following compound?
α-hydroxy phenyl acetic acid
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उत्तर
Conversion of benzaldehyde into 2-hydroxy phenyl acetic acid:
\[\begin{array}{cc}
\phantom{................}\ce{H}\phantom{.......................}\ce{H}\phantom{}\\
\phantom{................}|\phantom{........................}|\phantom{}\\
\ce{\underset{(Benzaldehyde)}{C6H5CHO} ->[HCN] C6H5 - C - CN ->[H^+/H2O][excess] C6H5 - C - COOH}\\
\phantom{................}|\phantom{........................}|\phantom{}\\
\phantom{.....................}\ce{\underset{(Phenyl cyanohydrin)}{OH}}\phantom{.......}\ce{\underset{α-hydroxy phenyl acetic acid}{OH}}\phantom{}
\end{array}\]
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संबंधित प्रश्न
Which of the following is a Wolf - Kishner reduction?
Assertion: 2, 2-dimethyl propanoic acid does not give HVZ reaction.
Reason: 2-2, dimethyl propanoic acid does not have α-hydrogen atom.
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their ____________.
What is the action of HCN on propanone?
Complete the following reaction.
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - C - CH3 ->[HO - CH2 - CH2 - CH2 - OH][dry HCl] ?}\\
||\phantom{.........}\\
\ce{O}\phantom{.........}
\end{array}\]
In the above reaction, product (B) is:
Which of the following reaction does not involve either oxidation or reduction?
Give two examples which undergo Wolf-Kishner reduction.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How will you prepare acetic anhydride from acetic acid?
