Positions 3 and 6 are the allylic positions in this molecule.
What is allylic position?
In organic chemistry, an allylic position refers to the next carbon adjacent to a double bond. In the structure provided, we need to identify the carbon atoms that are directly adjacent to the carbon-carbon double bond.
In the given compound, the double bond is between carbons 1 and 2. Therefore, the allylic positions are the carbons that are one step away from this double bond but not part of it.
This is how to identify them:
Position 3: This is an allylic position because it is next to carbon 2, which is part of the double bond.
Position 6: This is also an allylic position because it is next to carbon 1, which is part of the double bond.