Using Cahn-Ingold-Prelog rules, rank these substituents from highest priority to lowest priority. A) III > I > II B) II > I > III C) III > II > I D) I > II > III E) II > III > I
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.
![The image contains three chemical structures labeled as I, II, and III.
### Structure I:
- This structure is an amine with a linear carbon chain.
- The molecular structure shows a carbon chain connected to a nitrogen atom (NH).
- The nitrogen atom is attached to two carbon atoms with a single bond.
- The squiggly lines at the end of the structure indicate unspecified or variable connectivity.
### Structure II:
- This structure is another amine, similar to Structure I but with a different arrangement.
- It has a nitrogen (NH) bonded to two carbon atoms, forming a simple amine group.
- The nitrogen is attached to a methyl (CH3) group on one side.
- The squiggly lines at both ends represent unspecified bonds extending from the main structure.
### Structure III:
- Structure III is a primary amine with the formula H2N and it shows a more extended chain.
- The amine group (H2N) is attached to a two-carbon chain.
- Like the other structures, squiggly lines at the ends show undefined connectivity.
These diagrams represent different types of amines, highlighting variations in carbon chain length and connection points. The squiggly lines indicate that these structures are part of larger molecules or systems where the specific connections may vary or be unspecified in this context.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8f844d00-6c5e-468b-9347-2d727432be7a%2Fbbae9179-d1a5-453a-913d-d8983340ab0b%2Fry8pto_processed.png&w=3840&q=75)
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