NTA Abhyas NEET2020ChemistryAminesPractice
The following reaction R − CH 2 CH 2 N + (CH 3 ) 3 OH − → Δ RCH = CH 2 +N(CH 3 ) 3 + H 2 O is called
Options
- AHoffmann-bromamide reaction
- BCope elimination
- CHoffmann elimination
- DBeckmann rearrangement
Correct answer
C. Hoffmann elimination
Step-by-step solution
Trialkyl ammonium hydroxide undergoes Hoffmann elimination to give less substituted alkene. Elimination of more acidic β -H occurs from that β -carbon, which is joined to largest number of hydrogens. Thus, elimination of H occurs opposite to that of Saytzeff rules.