NEETChemistryGeneral Organic Chemistry
What is the correct IUPAC name of the compound CH₃-CH=C(OH)-C CH , and what is the hybridization state of the carbon atom bearing the hydroxyl group?
Options
- Apent-2-en-4-yn-3-ol ; sp^2
- Bpent-3-en-1-yn-3-ol ; sp^3
- Cpent-2-en-4-yn-3-ol ; sp
- Dpent-3-en-1-yn-3-ol ; sp^2
Correct answer
D. pent-3-en-1-yn-3-ol ; sp^2
Step-by-step solution
Identify the principal functional group, which is the -OH group. The longest carbon chain containing the -OH group and the multiple bonds has 5 carbon atoms (root word: pent). Number the chain to give the principal functional group the lowest possible locant. Numbering from either left to right or right to left gives the -OH group position 3. Apply the lowest locant rule for the multiple bonds. Numbering from right to left gives multiple bonds positions 1 and 3. Numbering from left to right gives positions 2 and 4.