COMEDK2021ChemistryGeneral Organic Chemistry
What is the IUPAC name of following compound?
Options
- A3, 3-diethynylpenta-1, 4-diene
- B3,3 -diethynylpenta-1, 4-diyne
- C3, 3-diethenyl-3, 3-diethynyl-methane
- D3-ethyl-3-ethylpent-1-en-4-yne
Correct answer
A. 3, 3-diethynylpenta-1, 4-diene
Step-by-step solution
The given structure is a central carbon atom bonded to two vinyl groups ( -CH=CH₂ ) and two ethynyl groups ( -C CH ). The structure can be represented as C(CH=CH₂)₂(C CH)₂ . To determine the IUPAC name, we identify the longest carbon chain containing the maximum number of multiple bonds. The longest chain containing both the double and triple bonds is a five-carbon chain (pentadiene derivative). The parent chain is a pentadiene with double bonds at positions 1 and 4. The substituents at position 3 are two ethynyl g