Names of some compounds arc given, which one is not in IUPsystem (1) CCCC(CC)C(C)CC</smi

step 1 The compound which is not in IUPAC system here is I'm just writing that compound structure and n

Names of some compounds arc given, which one is not in...

Names of some compounds arc given, which one is not in IUP\LambdaC system (1) <smiles>CCCC(CC)C(C)CC</smiles> 3-methyl-4-ethylheptane (2) <smiles>CC(C)C(C)O</smiles> 3-methyl-2-butanol (3) <smiles>CCC(C)C(CC)CC</smiles> 2-ethyl-3-methyl- 1 -ene (4) $\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{C}\left(\mathrm{CH}_{3}\right)_{2}$ 4-methyl-2-pentyne

Names of some compounds arc given, which one is not in IUP\LambdaC system
(1)
<smiles>CCCC(CC)C(C)CC</smiles> 3-methyl-4-ethylheptane
(2)
<smiles>CC(C)C(C)O</smiles> 3-methyl-2-butanol
(3)
<smiles>CCC(C)C(CC)CC</smiles> 2-ethyl-3-methyl- 1 -ene
(4) $\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{C}\left(\mathrm{CH}_{3}\right)_{2}$
4-methyl-2-pentyne

Key Concepts

Lowest Set of Locants Principle

A critical rule in the IUPAC system is that the carbon chain should be numbered in a way that the substituents receive the lowest possible numbers. This minimizes ambiguity and ensures that the positions of substituents are indicated as efficiently as possible by comparing the sets of locants to choose the lowest sequence.

IUPAC Nomenclature Rules

The IUPAC nomenclature system standardizes the naming of organic compounds, ensuring that each compound is given a unique and universally recognized name. This system involves rules for selecting the longest continuous carbon chain, identifying and naming substituents, and assigning locant numbers so that the structure of the compound is clearly communicated.

Alphabetical Order for Substituents

When multiple substituents are present on a carbon chain, their names must be listed in alphabetical order in the compound’s name, regardless of their locant numbers. This principle helps avoid confusion by providing a consistent method to arrange substituent names, even though the numbering is determined separately by the lowest locant rule.

Functional Group Priority

In organic nomenclature, functional groups are prioritized when selecting the parent chain and assigning locants. The group with the highest priority is given the lowest possible number, which affects the naming and numbering of the entire molecule, ensuring that key functional groups are recognized in the name.

Please give Ace some feedback