what would the chemical equation look like for each IUPAC name 4-phenyl-2-pentyne b. 2-phenyl-3-pentyne c. 3-phenyl-4-pentyne d. 2-phenyl-4-pentyne
See response below.
To determine the chemical equation for each IUPAC name, we need to understand the structural formula and the position of the substituents on the parent hydrocarbon chain. Here's how you can figure it out:
1. Start by identifying the parent hydrocarbon chain, which is the longest continuous chain containing the triple bond.
a. In the case of 4-phenyl-2-pentyne: The parent chain is pentyne (5 carbons) since it contains the triple bond. The phenyl group (C6H5) is attached to the 4th carbon.
2. Number the carbon atoms in the parent chain to locate the substituents:
a. For 4-phenyl-2-pentyne: Number the carbon atoms from the end closest to the substituent (phenyl group), so the triple bond is between carbon 2 and carbon 3.
3. Write the structural formula by incorporating the substituents at their respective positions:
a. For 4-phenyl-2-pentyne: The structural formula is CH3-CH2-C≡C-CH2-C6H5.
You can follow the same steps for the other IUPAC names:
b. 2-phenyl-3-pentyne: The parent chain is again pentyne (5 carbons), and the phenyl group is attached to the second carbon. Thus, the structural formula is CH3-CH2-C≡C-C6H5.
c. 3-phenyl-4-pentyne: The parent chain remains pentyne, and the phenyl group is attached to the third carbon. The structural formula is CH3-CH2-C≡C-CH2-C6H5.
d. 2-phenyl-4-pentyne: The parent chain is pentyne, and the phenyl group is attached to the second carbon. The structural formula is CH3-CH2-C≡C-CH2-C6H5.
Remember to represent the triple bond (≡C) correctly within the structure.