If a compound has the structure , how is the principal carbon chain selected according to IUPAC rule — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

If any one of these terminal functional groups is not directly attached to the parent unbranched chain and forms part of a side chain, the rule for three identical groups fails. Instead, the longest chain is selected containing two such similar groups at its two ends, and the remaining group is treated as a substituent.