Conversion of isobutene into isobutyl alcohol can be possible with

Options

A. `HOH//H^o+`
B. `BH_3` followed by `H_2O_2//barOH`
C. Conc. `H_2SO_4` followed by HOH
D. All of these

Answer

To convert isobutene into isobutyl alcohol, we can follow these steps:

### Step 1: Identify the Reactants
We start with isobutene, which has the structure:
\[ \text{CH}_2=C(\text{CH}_3)\text{CH}_3 \]

### Step 2: Choose the Appropriate Reagent
We need to choose a reagent that can facilitate the conversion of isobutene to isobutyl alcohol. One effective method is to use **BH3 (Boron Hydride)** followed by **H2O2** in a basic medium (OH⁻).

### Step 3: Addition of BH3
When BH3 is added to isobutene, it undergoes hydroboration. This process occurs according to **Anti-Markovnikov's rule**, meaning that the boron atom (BH2) will add to the carbon with more hydrogen atoms. Thus, the reaction can be represented as follows:
1. The boron atom adds to the less substituted carbon (the one with more hydrogen).
2. The structure after the addition of BH3 will be:
\[ \text{CH}_3-\text{C}(\text{BH}_2)-\text{CH}_2-\text{CH}_3 \]

### Step 4: Oxidation with H2O2
Next, we treat the product with hydrogen peroxide (H2O2) in the presence of a base (OH⁻). This step will oxidize the boron compound to form the alcohol:
1. The boron group (BH2) is replaced by a hydroxyl group (OH).
2. The final product will be isobutyl alcohol:
\[ \text{CH}_3-\text{C}(\text{OH})-\text{CH}_2-\text{CH}_3 \]

### Step 5: Conclusion
Thus, the conversion of isobutene to isobutyl alcohol can be successfully achieved using the reagents **BH3 followed by H2O2 in a basic medium**.

### Final Answer
The correct option for the conversion of isobutene into isobutyl alcohol is **BH3 followed by H2O2**.

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