Provide the IUPAC name for (CH3)2CHC=CCH2C(CH3)3.

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### IUPAC Nomenclature Quiz

**Question:**

Provide the IUPAC name for the compound (CH₃)₂CHC≡CCH₂C(CH₃)₃.

**Options:**
   - **A)** 1,1,5,5,5-pentamethyl-2-pentyne
   - **B)** 1,1,1,5,5-pentamethyl-3-pentyne
   - **C)** 2,2,6-trimethyl-4-heptyne
   - **D)** 2,6,6-trimethyl-3-heptyne
   - **E)** tert-butylisopropylacetylene

**Description:**

For each of the options, the IUPAC name denotes the structure and the placement of methyl groups and multiple bonds within the carbon chain. This structural information is critical for understanding and navigating the complex chemical nomenclature.

**Explanation of Nomenclature:**

1. **Longest Chain Identification:**
   The longest carbon chain that includes the triple bond should be identified to determine the base name.

2. **Numbering:**
   The chain should be numbered starting from the end nearest the triple bond to give the lowest possible numbers to the triple bond and substituents.

3. **Substituents:**
   The positions of methyl groups (or other substituents) on the main carbon chain need to be detailed.

In the correct option, all these rules are followed accurately to assign the correct IUPAC name to the compound provided.
Transcribed Image Text:### IUPAC Nomenclature Quiz **Question:** Provide the IUPAC name for the compound (CH₃)₂CHC≡CCH₂C(CH₃)₃. **Options:** - **A)** 1,1,5,5,5-pentamethyl-2-pentyne - **B)** 1,1,1,5,5-pentamethyl-3-pentyne - **C)** 2,2,6-trimethyl-4-heptyne - **D)** 2,6,6-trimethyl-3-heptyne - **E)** tert-butylisopropylacetylene **Description:** For each of the options, the IUPAC name denotes the structure and the placement of methyl groups and multiple bonds within the carbon chain. This structural information is critical for understanding and navigating the complex chemical nomenclature. **Explanation of Nomenclature:** 1. **Longest Chain Identification:** The longest carbon chain that includes the triple bond should be identified to determine the base name. 2. **Numbering:** The chain should be numbered starting from the end nearest the triple bond to give the lowest possible numbers to the triple bond and substituents. 3. **Substituents:** The positions of methyl groups (or other substituents) on the main carbon chain need to be detailed. In the correct option, all these rules are followed accurately to assign the correct IUPAC name to the compound provided.
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