Answer:
A. 1–hexene
B. 6–methyl–2–heptyne
Explanation:
To name the compound given in the question above, we must obtain the following:
1. Determine the functional group of the compound.
2. Locate the longest continuous carbon chain. This gives the parent name the compound.
3. Identify the substituent group attached to the compound.
4. Locate the position of the substituent group by giving it the lowest possible count.
5. Combine the above to obtain the name of the compound.
Now, we shall determine the name of the compound.
A. Determination of the name of the compound.
1. The compound contains double bond (–C=C–). Hence, the compound is an alkene.
2. The longest continuous carbon chain is 6. Thus, the compound is hexane. But the presence of the double bond makes the compound to become hexene.
3. The functional group i.e double bond (–C=C–) is located at carbon 1.
4. The name of the compound is:
1–hexene
B. Determination of the name of the compound.
1. The compound contains triple bond (–C≡C–). Hence, the compound is an alkyne.
2. The longest continuous carbon chain is 7. Thus, the compound is heptane. But the presence of the triple bond makes the compound to become heptyne.
3. The substituent group attached to compound is –CH₃ i.e methyl.
4. The substituent group is located at carbon 6 and the functional group i.e triple bond (–C≡C–) is located at carbon 2.
NOTE: Numbering is done by giving the functional group the lowest possible count.
5. The name of the compound is:
6–methyl–2–heptyne
