Question

Given below are two statements: Statement I:
IUPAC name of \(HO–CH_2​–(CH_2​)_5​–CH_2​–COCH_3\)​ is 7-hydroxyheptan-2-one. 
Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. 
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Statement I is correct but Statement II is incorrect.
• B. Both Statement I and Statement II are incorrect.
• C. Both Statement I and Statement II are correct.
• D. Statement I is incorrect but Statement II is correct.

Answer 1

The Correct Option is A

To determine the correct answers for the given statements, we need to analyze the chemical structure and naming conventions according to IUPAC rules. 

1. Let's first examine the compound given, \(HO–CH_2​–(CH_2​)_5​–CH_2​–COCH_3\). This represents a seven-carbon chain with a hydroxy group on the first carbon and a keto group on the second carbon. The IUPAC name should reflect these groups.
2. According to IUPAC naming rules, the longest carbon chain is identified and numbered, starting from the end nearest the functional group with the highest priority. In this case, the keto group (carbonyl) takes priority over the hydroxy group.
3. Starting from the carbonyl end, we find the keto group on the second carbon (2-one) and the hydroxy group on the seventh carbon (7-ol).
4. Thus, the correct IUPAC name is "7-hydroxyheptan-2-one," which is compatible with Statement I. Therefore, Statement I is correct.
5. Now, let's analyze Statement II: "2-oxoheptan-7-ol." This name suggests the presence of a keto group on the second carbon (2-oxo) and a hydroxy group on the seventh carbon (7-ol), but the format contradicts the prioritization and standard naming convention where hydroxyl suffix (ol) would have been used in a different context.

Therefore, Statement II is incorrectly phrased according to standard IUPAC naming rules.

Conclusion: Based on the analysis above, the option "Statement I is correct but Statement II is incorrect." is the correct choice.

Answer 2

7-Hydroxyheptan-2-one is the correct IUPAC name for the compound.
Thus, the correct answer is Option A.