See image — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

Step 1 - Identify the compound type: The structure shown is a cyclohexane-1,3,5-trione (a triketone ring) with three substituents: a tert-butyl group, a cyclopropylmethyl (CH2-cyclopropyl) group, and a phenyl group. This type of compound is characteristic of a phloroglucinol (1,3,5-cyclohexanetrione) derivative, which is the keto tautomer of a trihydroxybenzene. Step 2 - Recognize the tautomerism: 1,3,5-cyclohexanetrione (phloroglucinol keto form) is in equilibrium with its enol form, which is the aromatic compound 1,3,5-trihydroxybenzene (phloroglucinol). Under complete acidic hydrolysis, the substituted cyclohexanetrione can undergo retro-Knoevenagel or retro-Michael type cleavages as well as tautomerization to give aromatic products. Step 3 - Analyze complete acidic hydrolysis: Under complete acidic hydrolysis conditions, the triketone ring can open or tautomerize. The key products to consider for aromaticity are: 1. Phloroglucinol (1,3,5-trihydroxybenzene) - formed when the cyclohexanetrione enolizes fully to the aromatic tautomer. This is aromatic - COUNT 1. 2. The phenyl group is already on the ring as a substituent. When the ring fragments, benzoic acid or benzaldehyde or phenylacetic acid type compounds containing the benzene ring can form. The Ph group attached to the ring carbon, upon hydrolytic fragmentation under acidic conditions, would give a compound containing the phenyl (benzene) ring - COUNT 2. Step 4 - Evaluate cyclopropyl: The cyclopropylmethyl group (CH2-cyclopropyl) is NOT aromatic. Cyclopropane is not aromatic. The tert-butyl group is not aromatic. Step 5 - Identify the two aromatic compounds: (1) Phloroglucinol (1,3,5-trihydroxybenzene) from the cyclohexanetrione ring aromatizing via enolization - this is the aromatic product of the ring itself. (2) A benzene-containing fragment from the phenyl substituent (e.g., PhCHO or PhCOOH or similar compound containing benzene ring). These are the 2 aromatic compounds produced. Step 6 - Why not 1, 3, or 4: Only 1 would miss the phenyl-containing fragment. Three or four would require the cyclopropyl or tert-butyl groups to give aromatic products, which they cannot. Hence x = 2. Therefore, the correct answer is B.