Which of the following name reaction is used to prepare alkane containing new carbon-carbon bond?

Options

A. Wurtz reaction
B. Corey House synthesis
C. Sabatier and Senderens reaction
D. Clemmensen's reduction

Answer

To determine which name reactions are used to prepare alkanes containing new carbon-carbon bonds, let's analyze the given options step by step.

### Step 1: Analyze Wood's Reaction
- **Description**: Wood's reaction involves the reaction of two moles of alkyl halide with sodium in dry ether.
- **Reaction**:
\[ 2 \text{R-X} + 2 \text{Na} \xrightarrow{\text{dry ether}} \text{R-R} + 2 \text{NaX} \]
- **Outcome**: This reaction forms a new alkane (R-R) and creates a new carbon-carbon bond.
- **Conclusion**: Wood's reaction is **correct** for forming alkanes with new carbon-carbon bonds.

### Step 2: Analyze Corey-House Synthesis
- **Description**: In Corey-House synthesis, an alkyl halide reacts with lithium to form alkyl lithium, which then reacts with copper iodide to form a Gilman reagent.
- **Reaction**:
\[ \text{R-X} + \text{Li} \rightarrow \text{R-Li} \]
\[ \text{R-Li} + \text{CuI} \rightarrow \text{R}_2\text{Cu-Li} \]
\[ \text{R}_2\text{Cu-Li} + \text{R'-X} \rightarrow \text{R-R'} + \text{R'-Cu-Li} + \text{LiX} \]
- **Outcome**: This process results in the formation of a new alkane (R-R') with a new carbon-carbon bond.
- **Conclusion**: Corey-House synthesis is **correct** for forming alkanes with new carbon-carbon bonds.

### Step 3: Analyze Sabatier and Senderens Reaction
- **Description**: This reaction involves the hydrogenation of an alkyne to form an alkene and then further hydrogenation to form an alkane.
- **Reaction**:
\[ \text{R-C} \equiv \text{C-R'} \xrightarrow{\text{H}_2, \text{Pd}} \text{R-CH}=\text{CH-R'} \]
\[ \text{R-CH}=\text{CH-R'} \xrightarrow{\text{H}_2, \text{Pd}} \text{R-CH}_2\text{CH}_2\text{R'} \]
- **Outcome**: No new carbon-carbon bond is formed since the original alkyne is merely converted to an alkane.
- **Conclusion**: Sabatier and Senderens reaction is **incorrect** for forming alkanes with new carbon-carbon bonds.

### Step 4: Analyze Clemenson Reduction
- **Description**: Clemenson reduction involves the reduction of a ketone to an alkane using zinc amalgam and HCl.
- **Reaction**:
\[ \text{R-C}=\text{O-R'} \xrightarrow{\text{Zn-Hg/HCl}} \text{R-CH}_2\text{R'} \]
- **Outcome**: This reaction does not create a new carbon-carbon bond; it reduces a carbonyl compound to an alkane.
- **Conclusion**: Clemenson reduction is **incorrect** for forming alkanes with new carbon-carbon bonds.

### Final Conclusion
The name reactions that are used to prepare alkanes containing new carbon-carbon bonds are:
1. **Wood's Reaction**
2. **Corey-House Synthesis**