Question

In the following reaction sequence, \(Q\), \(R\), \(S\) and \(T\) are the major products. The correct statement(s) about \(Q\), \(R\), \(S\) and \(T\) is(are)

• A. \(S\) on warming with ammoniacal \(\mathrm{AgNO_3}\) results in the formation of silver mirror.
• B. \(Q\) on treatment with \(\mathrm{Cl_2}\)(excess)/UV gives gammexane.
• C. \(T\) is a heterocyclic compound.
• D. \(R\) on acid catalyzed intramolecular cyclization followed by treatment with \(\mathrm{Zn-Hg/HCl}\) gives \(9,10\)-dihydroanthracene.

Hint:

Important named reactions used here:
• Kolbe electrolysis: \[ 2RCOO^- \rightarrow R-R + 2CO_2 \]
• Rosenmund reduction: \[ \mathrm{RCOCl \xrightarrow{H_2/Pd-BaSO_4} RCHO} \]
• Wolff–Kishner reduction: \[ \mathrm{C=O \rightarrow CH_2} \]
• Tollens' test: aldehydes give silver mirror. Always identify products step-by-step in multistage organic reaction sequences.

Answer 1

The Correct Option is A