`(CH_(3))_(3) C - CHO` does not undergo aldol condensation due to

Options

A. three electron donating methyl groups
B. cleavage takig palce between `-C-CHO` bond
C. absence of alpha hydrogen atom in the molecule
D. bulky `(CH_(3))_(3)C-` group

Explanation

To solve the question regarding why `(CH₃)₃C - CHO` does not undergo aldol condensation, we can follow these steps:

### Step 1: Understand Aldol Condensation
Aldol condensation is a reaction between aldehydes or ketones that contain at least one alpha hydrogen atom. The reaction involves the formation of a beta-hydroxy aldehyde or ketone, which can further dehydrate to form an α,β-unsaturated carbonyl compound.

### Step 2: Identify the Compound
The given compound is `(CH₃)₃C - CHO`, which is known as isobutyraldehyde. The structure can be represented as:
```
CH₃
|
CH₃ - C - CHO
|
CH₃
```

### Step 3: Locate the Alpha Carbon
In the structure of isobutyraldehyde, the carbon atom adjacent to the carbonyl group (CHO) is the alpha carbon.

### Step 4: Check for Alpha Hydrogen Atoms
For aldol condensation to occur, the alpha carbon must have at least one hydrogen atom attached to it. In this case, the alpha carbon is attached to three methyl groups (CH₃). Therefore, it does not have any hydrogen atoms attached to it.

### Step 5: Conclusion
Since the alpha carbon does not have any hydrogen atoms (alpha hydrogen), the compound `(CH₃)₃C - CHO` cannot participate in aldol condensation. Thus, the reason for the non-reactivity in aldol condensation is the **absence of alpha hydrogen atoms**.

### Final Answer
The compound `(CH₃)₃C - CHO` does not undergo aldol condensation due to the **absence of alpha hydrogen atoms** on the alpha carbon.

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