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Question

(C) The given reactant is $4$-methylphenylglyoxal $(CH_3-C_6H_4-CO-CHO)$.This compound contains two carbonyl groups,both of which lack $\alpha$-hydrog

Vedclass · Accepted Answer

$2-$hydroxy$-2-$($4$-methylphenyl)acetic acid

Vedclass · Answer

(C) The given reactant is $4$-methylphenylglyoxal $(CH_3-C_6H_4-CO-CHO)$.This compound contains two carbonyl groups,both of which lack $\alpha$-hydrogens.When treated with concentrated $NaOH$ followed by acid workup $(H_3O^+)$,it undergoes an intramolecular Cannizzaro reaction.The aldehyde group $(-CHO)$ is more reactive towards nucleophilic attack than the ketone group $(-CO-)$.Therefore,the aldehyde group is oxidized to a carboxylic acid $(-COOH)$ and the ketone group is reduced to a secondary alcohol $(-CH(OH)-)$.The resulting product is $2$-hydroxy-$2-(4$-methylphenyl$)$acetic acid.

The major product of the following reaction is

Similar Questions

The compound $A$ in the following reaction is:
$A$ $\xrightarrow[(ii) Conc. H_2SO_4 / \Delta]{(i) CH_3MgBr / H_2O} B$ $\xrightarrow[(ii) Zn / H_2O]{(i) O_3} C + D$
$D \xrightarrow[Ba(OH)_2, \Delta]{} CH_3-C(CH_3)=CH-CO-CH_3$

The treatment of $Ph_2C(OH)CH_2NH_2$ with $NaNO_2 - HCl$ gives a product $(P)$ which on oxidation gives benzoic acid only. Identify the product $(P)$.

$CH_3COOCH_2CH_3 + PhMgBr_{(excess)} \to P \xrightarrow{H_2O} Q$;
$Q$ is

Tollen's reagent is

In which of the following reactions is a new carbon-carbon bond not formed?

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