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Multiple Choice
Provide IUPAC name for following.
A
4-propoxypentanal
B
3-ethoxybutanal
C
2-ethoxypentanol
D
4-ethoxypentanal
Verified step by step guidance
1
Identify the longest carbon chain that contains the aldehyde group. In this case, it is a five-carbon chain, which corresponds to 'pentanal'.
Number the carbon chain starting from the end nearest to the aldehyde group, ensuring the aldehyde carbon is carbon 1.
Identify the substituent group attached to the carbon chain. Here, there is an ethoxy group (an ethyl group attached through an oxygen) on the fourth carbon.
Combine the name of the substituent with the name of the main chain. The ethoxy group is on the fourth carbon, so it is named as '4-ethoxy'.
Combine the substituent name with the main chain name to get the IUPAC name: '4-ethoxypentanal'.