To solve the given question, we will go through the reactions step by step, starting from the initial compound and applying the reagents in the order specified.
### Step 1: Identify the Initial Compound
The initial compound is represented as `{:(CHO),(|),((CHOH)),(|),(CH_2OH):}`. This can be interpreted as:
- One aldehyde group (CHO)
- Two hydroxymethyl groups (CHOH)
- One additional hydroxymethyl group (CH2OH)
### Step 2: Reaction with Bromine Water (Br2 + H2O)
When the compound reacts with bromine water, the aldehyde group (CHO) is oxidized to a carboxylic acid (COOH). The reaction can be summarized as follows:
- CHO → COOH
Thus, the compound now looks like this:
- COOH, CHOH, CHOH, CH2OH
### Step 3: Reaction with Calcium Hydroxide (Ca(OH)2)
Calcium hydroxide acts as a base and can deprotonate the carboxylic acid, forming a calcium salt. The reaction can be represented as:
- COOH + Ca(OH)2 → Ca(COO)2 + H2O
This results in the formation of a calcium salt of the carboxylic acid, which can be represented as:
- Ca(COO)2, CHOH, CHOH, CH2OH
### Step 4: Reaction with Hydrogen Peroxide (H2O2) and Iron (Fe3+)
The next step involves the reaction with hydrogen peroxide in the presence of iron. Hydrogen peroxide can provide hydroxyl radicals, which can further oxidize the compound. The presence of Fe3+ can also facilitate the oxidation process. The hydroxyl groups will be introduced to the existing structure.
After this reaction, we can expect the following transformation:
- The compound retains its structure but may undergo further oxidation, leading to the formation of additional hydroxyl groups.
### Step 5: Elimination of Water
During the reaction, if there are two hydroxyl groups on the same carbon, dehydration can occur, leading to the elimination of water. This will yield a compound with fewer hydroxyl groups.
### Step 6: Final Product
After all the reactions, we summarize the final product:
- The product will have a carboxylic acid group, hydroxymethyl groups, and possibly an aldehyde group depending on the extent of oxidation.
### Conclusion
The final product can be represented as:
- CHO (aldehyde), COOH (carboxylic acid), CHOH (hydroxymethyl), and CH2OH (hydroxymethyl).
### Matching with Options
Now we compare the final product with the given options:
- Option A: Incorrect due to the presence of too many carboxylic groups.
- Option B: Incorrect due to the presence of too many hydroxymethyl groups.
- Option C: Correct as it matches the expected structure.
- Option D: Incorrect due to the presence of too many carboxylic groups.
### Final Answer
The correct option is **C**.
