First slide

Organic molecular structures and naming

Question

The IUPAC name of the compound
is

Moderate

A

1-Phenylbut-3-ene
B

4-Phenyl but-1-ene
C

3-propenyl benzene
D

1-Butenyl benzene

Solution

The functional group in given compound is ene.
phenyl is a substituent at C₄.
The longest chain of carbon atoms containing the double bond is selected.
The suffix ‘ene’ replaces ‘ane’ of alkanes.

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