Question

For a branched unsaturated acyclic hydrocarbon, the parent chain is the longest carbon chain that contains the :

• A. Maximum number of double bonds
• B. Maximum number of triple bonds
• C. Both A and B
• D. None of above

Answer 1

The correct option is C Both A and B

For a branched unsaturated acyclic hydrocarbon, the parent chain is the longest carbon chain that contains the maximum number of double and triple bonds. If there are two or more chains competing for selection as the parent chain (chain with the most multiple bonds), the choice goes to (1) the chain with the greatest number of carbon atoms, (2) the # of carbon atoms being equal, the chain containing the maximum number of double bonds.