Question
Write structures for each of the following compounds. Why are the given names incorrect? Write correct IUPAC names:
(i) 2-Ethylpentane
(ii) 5-Ethyl-3-methylheptane
Solution
(i) The structure of 2-Ethyl pentane is:
Largest chain is of six carbon atoms and not that of five:
(ii) Structure of 5-Ethyl-3-methylheptane is:
Numbering is to be started from the end which gives the lowest number to ethyl group
Largest chain is of six carbon atoms and not that of five:
(ii) Structure of 5-Ethyl-3-methylheptane is:
Numbering is to be started from the end which gives the lowest number to ethyl group
