Consider the following transformations of a compound $\mathbf{P}$. Choose the correct option(s).

(B) $\mathbf{X}$ is $\mathrm{Pd}-\mathrm{C} /$ quinoline $/ \mathrm{H}_{2}$; (C) (see structure)

(A) $\mathbf{P}$ is (see structure)

(D) $\mathbf{R}$ is (see structure)

JEE Advanced · 2020 · 27 Sep 2020 · Paper 2 · Hydrocarbons

Consider the following transformations of a compound

P

.

Choose the correct option(s).

(A) $P$ is (see structure)
(B) $X$ is $Pd - C /$ quinoline $/ H_{2}$ ✓ Correct
(C)(see structure)
✓ Correct
(D) $R$ is (see structure)

Answer: (B), (C)

Solution

The transformation sequence involves:

(B) Reagent X is Pd-C/quinoline/H₂ (Lindlar's catalyst or Rosenmund-like conditions for partial reduction). ✓

(C) The intermediate structure shown is consistent with the reaction pathway. ✓

Options (A) and (D) show incorrect structures for P and R based on the reaction scheme.

Correct: (B), (C)

JEE Advanced · 2020 · 27 Sep 2020 · Paper 2 · One or more correct options

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