CH3 CH;-C=C-CH,-CH-CH; What is the correct IUPAC name for the compound above? O 1-isopropyl-2-butyne O 2-methylhexene O 2-methylhexyne 5-methyl-2-hexyne
Classes Of Functional Groups
Organic Chemistry deals mostly with carbon and hydrogens, also called hydrocarbons, but those groups which replace hydrogen and bonds with carbon to give a characteristic nature, unique of their own, to the hydrocarbon they are attached to, are called functional groups. All the compounds belonging to a functional group undergo reactions in a similar pattern and are known to have similar physical and chemical properties.
Characteristics Of Functional Groups
In organic chemistry, we encounter a number of special substituent groups which are attached to the hydrocarbon backbone. These groups impart certain characteristics to the molecule of which it is a part of and thus, become the highlight of that particular molecule.
IUPAC Nomenclature
In Chemistry, IUPAC stands for International Union of Pure and Applied Chemistry which suggested a systematic naming approach for the organic and inorganic compounds, as in the beginning stage of nomenclature one single chemical compound was named in many ways by which lead to confusion. The need for this approach aroused as the number of chemical compounds newly discovered were increasing (approximately 32 million compounds) and the basic concept of nomenclature i.e. the trivial nomenclature and the derived system of nomenclature failed to overcome the challenge. It is an important task to name a chemical compound systematically and unambiguously which reduces lots of confusion about the newly reported compounds.
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CH₃
#### Options:
1. 1-isopropyl-2-butyne
2. 2-methylhexene
3. 2-methylhexyne
4. 5-methyl-2-hexyne
To select the correct IUPAC name for this compound, we need to follow the rules of IUPAC nomenclature, which involve identifying the longest carbon chain that contains the highest-priority functional group (in this case, the triple bond), and numbering the chain in such a way that the triple bond gets the lowest possible number. Substituents should be named and numbered accordingly.
**Explanation of the Structural Formula:**
- The structure consists of a chain with six carbon atoms.
- It has a triple bond between the first and second carbon atoms.
- There is a methyl group (CH₃) attached to the fifth carbon atom.
Reviewing the options and considering the structure, the correct IUPAC name for this compound is:
#### Answer:
4. 5-methyl-2-hexyne
This name correctly identifies the longest chain (hexane), locates the triple bond starting at the second carbon (2-yne), and indicates the presence of a methyl group on the fifth carbon (5-methyl).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fccbc8bf4-8e89-4e4e-b9a4-2700c1ba500b%2Fdee2fa63-d045-4353-b409-03bd77542feb%2F3wuu5m9_processed.png&w=3840&q=75)
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