How many enolizable hydrogens are there in the compound 2-methylcyclohex-2- en -1 -one?
How many enolizable hydrogens are there in the compound 2-methylcyclohex-2- en -1 -one?
3
7
4
2
The Correct Option is C
Solution and Explanation
To solve the problem, we need to determine how many enolizable hydrogens are present in the compound 2-methylcyclohex-2-en-1-one.
1. Understanding Enolizable Hydrogens:
Enolizable hydrogens are those attached to carbons that are adjacent to a carbonyl group (C=O) or conjugated to a double bond.
2. Analyzing the Structure:
The structure of 2-methylcyclohex-2-en-1-one consists of a cyclohexane ring with a methyl group at position 2, a double bond at position 2, and a ketone group at position 1.
3. Identifying Enolizable Hydrogens:
The hydrogens at the following positions are enolizable:
- The hydrogen attached to carbon 3 (adjacent to the carbonyl group).
- The hydrogens attached to the carbons conjugated to the double bond at position 2.
4. Conclusion:
There are a total of 4 enolizable hydrogens in the compound 2-methylcyclohex-2-en-1-one.
Final Answer:
The compound contains 4 enolizable hydrogens.
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Concepts Used:
Aldehydes, Ketones, and Carboxylic Acids
Aldehydes, Ketones, and Carboxylic Acids are carbonyl compounds that contain a carbon-oxygen double bond. These organic compounds are very important in the field of organic chemistry and also have many industrial applications.
Aldehydes:
Aldehydes are organic compounds that have the functional group -CHO.
Preparation of Aldehydes
Acid chlorides are reduced to aldehydes with hydrogen in the presence of palladium catalyst spread on barium sulfate.
Ketones:
Ketones are organic compounds that have the functional group C=O and the structure R-(C=O)-R’.
Preparation of Ketones
Acid chlorides on reaction with dialkyl cadmium produce ketones. Dialkyl cadmium themselves are prepared from Grignard reagents.
Carboxylic Acid:
Carboxylic acids are organic compounds that contain a (C=O)OH group attached to an R group (where R refers to the remaining part of the molecule).
Preparation of Carboxylic Acids
Primary alcohols are readily oxidized to carboxylic acids with common oxidizing agents such as potassium permanganate in neutral acidic or alkaline media or by potassium dichromate and chromium trioxide in acidic media.