


















Courses
Q.
Choose the appropriate reagent sequence from the given reagent pool to complete the synthetic conversion. Make sure to use strictly four reagents, not more not less.
Note: You can simply mention the numerical values corresponding to the reagent in the boxes P, Q, R and S respectively and also consider major organic product in each step. What is the value of [P + R + S – Q]?
1. 2. 3. 4.
5. 6. 7. 8.
9. 10.
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
answer is 9.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE
Detailed Solution

Chemical Reaction Explanation
The image shows a chemical reaction involving the conversion of an alkene into an alcohol. Here's the explanation:
Starting Material:
The reactant is a branched alkene with a double bond between the terminal carbon and the adjacent carbon.
- Reagents:
- HBr/ROOR/Δ: This step likely introduces a bromine atom to the less substituted carbon of the double bond (anti-Markovnikov addition of HBr).
- t-BuOK/Δ: This strong base induces elimination (E2 mechanism) to regenerate a terminal alkene.
- BH₃·THF: Hydroboration adds boron to the less substituted carbon and hydrogen to the more substituted carbon in a syn-addition manner.
- H₂O₂/aq. NaOH: Oxidation of the boron intermediate replaces the boron with a hydroxyl (-OH) group, forming an alcohol.
Product:
The final product is a secondary alcohol located on a branched alkane, indicating anti-Markovnikov addition of water across the initial double bond.
This sequence of reactions effectively transforms the starting alkene into a terminal alcohol through a combination of hydroboration and oxidation.
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test