In which of the following reactions is a carb | vedclass

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(C) In the $Cannizzaro$ reaction,an aldehyde lacking an $\alpha$-hydrogen atom undergoes disproportionation in the presence of a concentrated base to

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Cannizzaro Reaction

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(C) In the $Cannizzaro$ reaction,an aldehyde lacking an $\alpha$-hydrogen atom undergoes disproportionation in the presence of a concentrated base to form a carboxylic acid salt and an alcohol. No new $C-C$ bond is formed in this process.In the $Reimer-Tiemann$ reaction,a $C-C$ bond is formed between the phenol ring and the dichlorocarbene species.In the $Wurtz$ reaction,two alkyl halides react to form a higher alkane,creating a new $C-C$ bond.In the $Friedel-Crafts$ reaction,an alkyl or acyl group is attached to an aromatic ring,forming a new $C-C$ bond.

In which of the following reactions is a carbon$-$carbon bond $NOT$ formed during the formation of the product?

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