Isopropylamine can be obtained by

Options

A. `(CH_(3))_(2)C=O+NH_(2)OH to?overset(LiAlH_(4))to`
B. `(CH_(3))_(2)CO+NH_(3) underset(Delta)overset(Ni//H_(2))to`
C. `(CH_(3))_(2)CH-Br+NaNH_(2)to`
D. `(CH_(3))_(2)CH-Br overset(NaN_(3))to?overset(LiAlH_(4))to`

Explanation

To obtain isopropylamine (C3H9N), we can consider different methods. Here’s a step-by-step solution based on the information provided:

### Step 1: Understanding Isopropylamine
Isopropylamine is a secondary amine with the structure (CH3)2CHOH. It can be synthesized through various methods, including the reduction of imines or the reaction of alkyl halides with ammonia.

### Step 2: Reaction with Carbonyl Compounds
1. **Starting Material**: We can start with acetone (C3H6O), which has the structure CH3C(=O)CH3.
2. **Formation of an Imine**: When acetone reacts with hydroxylamine (NH2OH), it forms an oxime through a condensation reaction, releasing water:
\[ CH3C(=O)CH3 + NH2OH \rightarrow CH3C(=N-OH)CH3 + H2O \]
This is the formation of the oxime.

### Step 3: Reduction of the Oxime
3. **Reduction**: The oxime can then be reduced to isopropylamine using a reducing agent such as lithium aluminum hydride (LiAlH4):
\[ CH3C(=N-OH)CH3 + LiAlH4 \rightarrow (CH3)2CHNH2 \]
This reaction converts the oxime into isopropylamine.

### Step 4: Alternative Method with Ammonia
4. **Using Ammonia**: Another method involves the reaction of acetone with ammonia (NH3) to form an imine, which can also be reduced:
\[ CH3C(=O)CH3 + NH3 \rightarrow CH3C(=N-H)CH3 + H2O \]
Then, reducing the imine with LiAlH4 yields isopropylamine.

### Step 5: Evaluating Other Options
5. **Other Options**:
- **Option 3**: CH3CHBrCH3 + NaNH2 does not yield isopropylamine; it leads to propane.
- **Option 4**: CH3CHBrCH3 + NaN3 does not yield isopropylamine either.

### Conclusion
Thus, isopropylamine can be obtained through the following methods:
- **Option 1**: Acetone + Hydroxylamine → Oxime → Isopropylamine (via reduction)
- **Option 2**: Acetone + Ammonia → Imine → Isopropylamine (via reduction)

**Final Answer**: Isopropylamine can be obtained by options 1 and 2.

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