NEET2026ChemistryChapterActual
Consider the following sequence of reactions: Identify the major product 'Z'.
Options
- A3-Methylbutan-1-ol
- B2,2-Dimethylpropan-1-ol
- C2-Methylbutan-2-ol
- D3-Methylbutan-2-ol
Correct answer
A. 3-Methylbutan-1-ol
Step-by-step solution
The reaction of 2-methylpropene with HBr in the presence of peroxide follows anti-Markovnikov's rule (Kharasch effect) to give 1-bromo-2-methylpropane (X). ( CH ₃)₂ C = CH ₂ + HBr Peroxide ( CH ₃)₂ CH - CH ₂ Br (X) 1-Bromo-2-methylpropane reacts with magnesium in dry ether to form the corresponding Grignard reagent, isobutylmagnesium bromide (Y). ( CH ₃)₂ CH - CH ₂ Br + Mg dry ether ( CH ₃)₂ CH - CH ₂ MgBr (Y) The Grignard reagent (Y) undergoes nucleophilic addition with formaldehyde (HCHO) followed by acidic hydro