Which of the following reactions cannot be us | vedclass

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(B) $1$. Gatterman-Koch reaction: Benzene reacts with $CO$ and $HCl$ in the presence of anhydrous $AlCl_3$ to form benzaldehyde.$2$. Etard reaction: T

Vedclass · Accepted Answer

Benzoic acid + $Zn/Hg$ and conc. $HCl$

Vedclass · Answer

(B) $1$. Gatterman-Koch reaction: Benzene reacts with $CO$ and $HCl$ in the presence of anhydrous $AlCl_3$ to form benzaldehyde.$2$. Etard reaction: Toluene reacts with $CrO_2Cl_2$ in $CS_2$ followed by hydrolysis to form benzaldehyde.$3$. Rosenmund reduction: Benzoyl chloride is reduced by $H_2$ in the presence of $Pd-BaSO_4$ to form benzaldehyde.$4$. The reaction of benzoic acid with $Zn/Hg$ and conc. $HCl$ (Clemmensen reduction) is used to reduce aldehydes and ketones to alkanes,not to prepare aldehydes from carboxylic acids. Therefore,this reaction cannot be used to prepare benzaldehyde.

Which of the following reactions cannot be used to prepare benzaldehyde?

Similar Questions

What is the final product obtained when benzonitrile reacts with phenyl magnesium bromide in equimolar proportion?

Identify compound $X$ in the following sequence of reactions:

The structure of $PCC$ is

$C_6H_5CH_3$ $\xrightarrow{CrO_2Cl_2} A$ $\xrightarrow{H_2O} B$
The functional group present in $B$ and the name of the reaction are:

$CH_3-C(CH_3)(OH)-C(CH_3)(OH)-CH_3 \xrightarrow[H^{+}]{\Delta} ?$

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