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NEET 2024 · ChemistryPrevious Year Question

Identify the correct reagents that would bring about the following transformation: $C X_{6} H X_{5} - CH X_{2} - CH = CH X_{2} C X_{6} H X_{5} - CH X_{2} - CH X_{2} - CHO$ (allylbenzene is converted to 3-phenylpropanal)

Answer: (A) (i) $BH X_{3}$ , (ii) $H X_{2} O X_{2}$ / $OH X^{-}$ , (iii) PCC.

A.(i) $BH X_{3}$ , (ii) $H X_{2} O X_{2}$ / $OH X^{-}$ , (iii) PCC✓
B.(i) $BH X_{3}$ , (ii) $H X_{2} O X_{2}$ / $OH X^{-}$ , (iii) alk. $KMnO X_{4}$ , (iv) $H X_{3} O X^{+}$
C.(i) $H X_{2} O$ / $H X^{+}$ , (ii) PCC
D. $H X_{2} O$ / $H X^{+}$

Correct Answer

(A) (i) $BH X_{3}$ , (ii) $H X_{2} O X_{2}$ / $OH X^{-}$ , (iii) PCC

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