Q54.The major product of the following reaction is: JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question involves Hofmann exhaustive methylation and elimination. While direct Hofmann elimination to an alkene doesn't occur when N is directly on an aromatic ring, the reagents are standard for such eliminations. Given the options, it implies removal of the quaternary ammonium group and replacement with a hydroxyl group through an unusual nucleophilic substitution.
Concepts Tested
Formulas Used
R-CH₂-CH₂-N⁺(CH₃)₃ OH⁻ → R-CH=CH₂ + N(CH₃)₃ + H₂O
📚 NCERT Sections This Tests
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
7.7 — Predict The Major Product Of Acid Catalysed Dehydration Of
Chemistry Class 12 · Chapter 7
7.7 Predict the major product of acid catalysed dehydration of (i) 1-methylcyclohexanol and (ii) butan-1-ol
9.7 — Write Short Notes On The Following:
Chemistry Class 12 · Chapter 9
9.7 Write short notes on the following: (i) Carbylamine reaction (ii) Diazotisation (iii) Hofmann’s bromamide reaction (iv) Coupling reaction (v) Ammonolysis (vi) Acetylation (vii) Gabriel phthalimide synthesis.
📋 Question Details
- Chapter
- Nitrogen Compounds
- Topic
- Hofmann Elimination (Exhaustive Methylation)
- Year
- 2018
- Shift
- 16 Apr Online
- Q Number
- Q54
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 13: Amines
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