JEE Main · 2022 · 26 Jul 2022 · Shift 1 · Haloalkanes and Haloarenes

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Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide (PhMgBr) followed by acidic hydrolysis?

(A) $CH_{3} - C \equiv N$
(B) $Ph - C \equiv N$
(C)(see structure)
(D)(see structure)
✓ Correct

Answer: (D)

Solution

Grignard reagents react with ketones to form tertiary alcohols. The product shown is a tertiary alcohol with two phenyl groups and one methyl group. Acetophenone (PhCOCH₃) reacts with PhMgBr to add one phenyl group, forming Ph₂C(OH)CH₃ after hydrolysis. Therefore, option (D) is correct.

JEE Main · 2022 · 26 Jul 2022 · Shift 1 · Single correct option

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