Chemistry - AMINES Question with Solution | TestHub
Identify the reaction that does not give aromatic product.
Options:
Answer:
Solution:
Question Explanation:
Identifying the reaction that yields a non-aromatic product based on reaction type. Concept:
This question is based on
Nucleophilic addition elimination reaction.
Cyclic aldol condensation reaction.
Electrophilic addition reaction of alkene.
Solution:
Option 1: Hexane-2,5-dione reacts with Ammonium carbonate under heat. This is a classic method for synthesizing pyrrole. Pyrrole is a five-membered heterocyclic aromatic compound. Aromatic.
Option 2: Phthalaldehyde (Benzene-1,2-dicarbaldehyde) reacts with Hydrazine under acidic conditions. Phthalaldehyde is known to react with hydrazine to form a derivative of phthalazine or a polycyclic compound, which are generally aromatic. Aromatic.
Option 3: Acetone is treated with Conc. H2SO4 and heat. This is a trimerization reaction where three molecules of acetone undergo multiple aldol condensations and dehydrations, eliminating three molecules of water. The major product is Mesitylene (1,3,5-trimethylbenzene). Aromatic.
Option 4: But -1-ene with dil. H2SO4 H+ adds to the terminal carbon of the double bond. The more stable secondary carbocation forms. Water attacks this carbocation. Deprotonation gives 2-butanol.
