The correct set(s) of reactions to synthesize | vedclass

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(A, C, D) To synthesize benzoic acid from benzene:Option $(A)$: Benzene reacts with $Br_2/Fe$ to form bromobenzene, which forms a Grignard reagent $(P

Vedclass · Accepted Answer

$(i) CH_3COCl, 	ext{Anhydrous } AlCl_3, (ii) Br_2, NaOH, (iii) H_3O^{\oplus}$

Vedclass · Answer

(A, C, D) To synthesize benzoic acid from benzene:Option $(A)$: Benzene reacts with $Br_2/Fe$ to form bromobenzene, which forms a Grignard reagent $(PhMgBr)$ with $Mg/	ext{dry ether}$. This reacts with $CO_2$ followed by acid hydrolysis $(H_3O^{\oplus})$ to yield benzoic acid.Option $(C)$: Friedel-Crafts alkylation of benzene with $CH_3Cl/AlCl_3$ gives toluene. Oxidation of toluene with alkaline $KMnO_4$ followed by acidification gives benzoic acid.Option $(D)$: Friedel-Crafts acylation of benzene with $CH_3COCl/AlCl_3$ gives acetophenone. The haloform reaction with $Br_2/NaOH$ followed by acidification gives benzoic acid.Option $(B)$ is incorrect as the reaction sequence does not lead to benzoic acid.Therefore, the correct sets are $(A), (C),$ and $(D)$.

The correct set$(s)$ of reactions to synthesize benzoic acid starting from benzene is/are:

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