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Naming aromatic compounds A2 chem

I don't understand when the name includes Benzene and when it includes Phenyl instead
Original post by JacobBob
I don't understand when the name includes Benzene and when it includes Phenyl instead

When the aromatic ring is the main functional group the suffix benzene is used. When there is a more important functional group (higher priority) then phenyl is used as a prefix.

Methylbenzene - the ring is more important (higher priority) than the alkyl chain.
Phenylethene - the alkenyl group has a higher priority than the aromatic ring.

Nitrobenzene - the nitro group is low priority
Phenylamine - the amine group is higher priority.
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JacobBob
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Original post by charco
When the aromatic ring is the main functional group the suffix benzene is used. When there is a more important functional group (higher priority) then phenyl is used as a prefix.

Methylbenzene - the ring is more important (higher priority) than the alkyl chain.
Phenylethene - the alkenyl group has a higher priority than the aromatic ring.

Nitrobenzene - the nitro group is low priority
Phenylamine - the amine group is higher priority.

Okay, so how do I know which groups have a higher priority or is more important ?
Original post by JacobBob
Okay, so how do I know which groups have a higher priority or is more important ?


The easiest way is just to learn the names of the common compounds.

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