The Ruff degradation used to reduce the carbon the carbon chain in an

Options

A. Alcohol
B. Alkene
C. Ketose
D. Aldose

Answer

**Step-by-Step Solution:**

1. **Understanding Ruff Degradation**: Ruff degradation is a synthetic method used to shorten the carbon chain of sugars, particularly aldoses. It involves the oxidation of a sugar followed by the hydrolysis of the resulting product.

2. **Identifying the Starting Material**: The question mentions the reduction of the carbon chain in an aldose. Aldoses are a type of monosaccharide that contain an aldehyde group. D-glucose is a common example of an aldose.

3. **Process of Ruff Degradation**: In Ruff degradation, D-glucose (C6H12O6) is oxidized to form a corresponding aldonic acid. This is then treated with hydrazine and subsequently hydrolyzed to yield a sugar with a shorter carbon chain.

4. **Resulting Product**: When D-glucose undergoes Ruff degradation, it is converted into D-arabinose, which is a five-carbon aldose (C5H10O5). This indicates that the carbon chain has been reduced from six carbons to five carbons.

5. **Conclusion**: Since the question asks which type of sugar is reduced in carbon chain through Ruff degradation, the correct answer is D-arabinose, which is an aldose.

**Final Answer**: The Ruff degradation is used to reduce the carbon chain in an aldose, specifically resulting in D-arabinose.

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