The reaction
`2CH_(3)-C-underset(O)underset(||)(C)C_(2)H_(5) overset(C_(2)H_(5)ON a)toCH_(3)-underset(O)underset(||)(C)-CH_(2)-underset(O)underset(||)(C)-OC_(2)H_(5)+C_(2)H_(5)OH` is called

Options

A. Etard reaction
B. Perkin's reaction
C. Claisen condensation
D. Claisen Schmidt reaction

Answer

To solve the question regarding the reaction of `2CH₃-C(=O)C₂H₅` leading to `CH₃-C(=O)CH₂-C(=O)OC₂H₅ + C₂H₅OH`, we need to identify the name of this reaction. Here’s a step-by-step breakdown:

### Step 1: Identify the Reactants
The reactants in the reaction are two molecules of ethyl acetoacetate, which is represented as `CH₃-C(=O)C₂H₅`. This compound is an ester and has a keto group (C=O) adjacent to an ester functional group.

**Hint:** Look for the functional groups in the reactants to understand the type of reaction taking place.

### Step 2: Understand the Reaction Type
The reaction involves the condensation of two ester molecules. In this case, the reaction is a type of Claisen condensation, which typically occurs between esters in the presence of a strong base.

**Hint:** Recall that Claisen condensation involves the reaction of two esters or an ester and a carbonyl compound in the presence of a base.

### Step 3: Identify the Product
The product formed is a β-keto ester, which has both a ketone and an ester functional group. The structure `CH₃-C(=O)CH₂-C(=O)OC₂H₅` indicates that a new carbon-carbon bond has been formed between the two reactants.

**Hint:** Look for the functional groups in the product to confirm it is a β-keto ester.

### Step 4: Name the Reaction
The reaction is specifically called Claisen condensation (or Claisen ester condensation). This name reflects the formation of a β-keto ester from the reaction of two esters.

**Hint:** Remember that the name of the reaction often reflects the type of compounds involved and the nature of the reaction (condensation).

### Final Answer
The reaction `2CH₃-C(=O)C₂H₅ → CH₃-C(=O)CH₂-C(=O)OC₂H₅ + C₂H₅OH` is called **Claisen condensation** or **Claisen ester condensation**.