At higher temperature, iodoform reaction is given by:

Options

A. `CH_(3)CO_(2)CH_(3)`
B. `CH_(3)CO_(2)C_(2)H_(5)`
C. `C_(6)H_(5)CO_(2)CH_(3)`
D. `CH_(3)CO_(2)C_(6)H_(5)`

Answer

To solve the question regarding the iodoform reaction at higher temperatures, we can follow these steps:

### Step 1: Understand the Iodoform Reaction
The iodoform reaction is a chemical reaction that involves the formation of iodoform (CHI3) from compounds that have a methyl ketone group (RCOCH3) or from certain alcohols and aldehydes.

### Step 2: Identify the Conditions
The question specifies that the reaction occurs at higher temperatures. This is important because it indicates that certain compounds, which typically do not undergo the iodoform reaction under normal conditions, may do so when heated.

### Step 3: Recognize the Compounds Involved
While esters generally do not give the iodoform reaction, some esters can decompose or rearrange at higher temperatures to form a methyl ketone. For example, the ester CH3COOCH3 (methyl acetate) can undergo a reaction to produce CH3COCH3 (acetone), which can then react to give iodoform.

### Step 4: Example of an Ester
One specific example mentioned is the ester CH3C(=O)OCH3 (methyl acetate). When heated, it can undergo a reaction that leads to the formation of acetone, which is a methyl ketone and can give the iodoform reaction.

### Step 5: Conclusion
Thus, at higher temperatures, certain esters can indeed give the iodoform reaction due to their ability to form methyl ketones.

### Final Answer
The correct option is option A, which represents the ester that can give the iodoform reaction at higher temperatures.

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