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Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

In a set of the given reactions, acetic acid yielded a product C.
CH3COOH+PCl5 →\rightarrow A →Anh. AlCl3C6H6\xrightarrow[Anh.\,AlCl_3]{C_6H_6} B →etherC2H5MgBr\xrightarrow[ether]{C2H5MgBr} ‘C’, product C would be

A

CH3CH(OH)C2H5

B

CH3COC6H5

C

CH3CH(OH)C6H5

D

Answer

Explanation

Solution

When carboxylic acids react with PCl5, they form acid chlorides. These acid chlorides, when reacted with benzene or its derivatives, result in the formation of ketones. This chemical transformation is commonly referred to as Friedel-Crafts acylation, and it is typically carried out in the presence of anhydrous AlCl3. Subsequently, ketones, when subjected to reactions with Grignard reagents, lead to the synthesis of tertiary alcohols.