Choose the IUPAC name of the following compound: CH3 |CH3 - CH - CH2 - CH = CH2
Correct answer: A. 4- Methyl-1-Pentene
- A. 4- Methyl-1-Pentene
- B. 2- Methyl-3- Pentene
- C. 2- Methyl-2- Pentene
- D. 4,4-Dirnethyl-2-Pentene
Explanation
According to the IUPAC system of naming compounds, the methyl group is the substituent that will have secondary importance because the double bond is of primary importance. The correct IUPAC name is 4-Methyl-1-Pentene, where the double bond is prioritized. All other options do not follow the IUPAC rules for naming alkenes and identifying the parent alkene chain.
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About Alkenes
Alkenes are unsaturated hydrocarbons containing a carbon-carbon double bond with sigma and pi components and restricted rotation. Their reactions include electrophilic addition of hydrogen, halogens, hydrogen halides and water, with Markovnikov orientation, oxidation, combustion and polymerisation, while their preparation commonly involves elimination from alkyl halides or alcohols.
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