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The IUPAC name of the following compound...

The IUPAC name of the following compound is
`(CH_(3))_(2)CH-CH_(2)CH=CH-CH=CH-underset(C_(2)H_(5))underset(|)CH-CH_(3)`

A

2, 8-dimethyl -3, 6- decadiene

B

1, 1, 7, 7 - tetramethyl -2, 5-octadiene

C

2, 8- dimethyl - deca - 4, 6-diene

D

3, 9- dimethyl -4, 6- decadiene

Text Solution

AI Generated Solution

The correct Answer is:
To determine the IUPAC name of the given compound, we will follow these steps: ### Step 1: Identify the Longest Carbon Chain First, we need to identify the longest continuous carbon chain in the compound. The structure provided has a total of 10 carbon atoms when we include the ethyl group and the other substituents. ### Step 2: Number the Carbon Chain Next, we will number the carbon chain starting from the end closest to the first double bond. This is important to ensure that the double bonds receive the lowest possible numbers. - If we start numbering from the left (where the first double bond appears), we get: 1. C1 - CH3 2. C2 - CH2 3. C3 - CH 4. C4 - CH 5. C5 - CH2 6. C6 - CH 7. C7 - CH 8. C8 - CH2 9. C9 - CH3 10. C10 - CH2 (from the ethyl group) ### Step 3: Identify Substituents and Their Positions Now we will identify the substituents and their positions: - There are two methyl (–CH3) groups: - One at position 3 - One at position 10 - There are two double bonds: - One at position 4 - One at position 6 ### Step 4: Construct the IUPAC Name Now we can construct the IUPAC name using the information gathered: - The base name for a 10-carbon alkene with two double bonds is "decadiene". - The positions of the double bonds are 4 and 6, so we write "4,6-decadiene". - The methyl groups are at positions 3 and 10, so we write "3,10-dimethyl". Putting it all together, the complete IUPAC name is: **3,10-dimethyl-4,6-decadiene** ### Final Answer The IUPAC name of the compound is **3,10-dimethyl-4,6-decadiene**. ---
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