The reaction
`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C )-ONa+CH_(3)CH_(2)ClrarrCH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C )-O-CH_(2)-CH_(3)`
is called

Options

A. Gatterman -Koch reaction
B. Williamson - synthesis
C. Williamson continuous etherification process
D. Etard reaction

Answer

To determine the name of the reaction represented by the equation:

`CH₃-CH(CH₃)-CH₃-ONa + CH₃CH₂Cl → CH₃-CH(CH₃)-CH₃-O-CH₂-CH₃`

we can follow these steps:

### Step 1: Identify the Reactants
- The first reactant is `CH₃-CH(CH₃)-CH₃-ONa`, which is sodium tertiary butoxide (a sodium alkoxide).
- The second reactant is `CH₃CH₂Cl`, which is ethyl chloride.

**Hint:** Look for the functional groups and the structure of the reactants to identify them correctly.

### Step 2: Understand the Reaction Mechanism
- The sodium alkoxide (O⁻) acts as a nucleophile and attacks the electrophilic carbon in ethyl chloride (CH₃CH₂Cl).
- This is a nucleophilic substitution reaction, specifically an SN2 reaction, where the alkoxide ion displaces the chloride ion (Cl⁻).

**Hint:** Recall the characteristics of nucleophiles and electrophiles in organic reactions.

### Step 3: Identify the Product
- The product formed from this reaction is `CH₃-CH(CH₃)-CH₃-O-CH₂-CH₃`, which is an ether.
- The reaction results in the formation of an ether from an alkoxide and an alkyl halide.

**Hint:** Ether formation typically involves the reaction of an alcohol or alkoxide with an alkyl halide.

### Step 4: Name the Reaction
- This reaction is known as Williamson Ether Synthesis.
- It is a well-known method for synthesizing ethers by reacting an alkoxide with an alkyl halide.

**Hint:** Remember that Williamson Ether Synthesis is characterized by the formation of ethers from alkoxides and alkyl halides.

### Final Answer
The reaction is called **Williamson Ether Synthesis**.