Which of the following compounds can be prepared by using Grignard reagents?

Explanation

Option A: Alkanes: Grignard reagents can be used to prepare alkanes through the reaction with alkyl halides. The Grignard reagent acts as a nucleophile, displacing the halide group and forming a carbon-carbon bond with the alkyl halide, leading to the formation of an alkane.Option B: Alcohols: Grignard reagents react with carbonyl compounds, such as aldehydes and ketones, to form alcohols. The carbon of the carbonyl compound is replaced by the alkyl group of the Grignard reagent, resulting in the formation of an alcohol.Option C: Carboxylic acids: Grignard reagents can react with carbon dioxide (CO2) to form carboxylic acids. This reaction, known as the Grignard reaction with CO2, involves the addition of the Grignard reagent to CO2 followed by hydrolysis, resulting in the formation of a carboxylic acid.Option D: Grignard reagents (organo magnesium compounds) are versatile and powerful nucleophiles that can react with various electrophilic compounds. They can be used to prepare alkanes, alcohols, and carboxylic acids through different reactions.