naming aromatic compounds Flashcards
which groups are shown as prefixes to benzene?
- alkyl groups < 7 carbons
- halogens
- nitro groups
eg ethylbenzene, chlorobenzene, nitrobenzene
how are compounds with one substituent group named?
- benzene considered parent
- eg chlorobenzene, ethylbenzene
what is meant by benzene ‘substituent’?
when benzene is attached to an alkyl chain with a functional group or an alkyl chain with 7+ carbons
- prefix phenyl is used
give examples of molecules where the prefix phenyl is used
- phenylthanone
- phenyloctane
how are groups counted if all groups are the same?
- pick any group as 1
- take shortest path around ring
what is the benzene called when attached to another compound?
phenyl
- this is the prefix!!
- eg phenylethene
what is a phenol?
benzene with OH group
what does benzoic acid look like?
- benzene ring
- COOH group
what does 2 hydroxybenzoic acid look like?
- benzene ring
- COOH group on C1
- OH group on C2
which has priority: COOH or OH?
OH
how are prefixes added to benzene for short alklyl chains, halogens, nitro groups?
- alphabetical
- di tri tetra
what does phenylamine look like?
- benzene ring
- NH2
what does benzaldehyde look like?
- benzene ring
- CHO
when is the prefix amino used for NH2?
when CHO or COOH take priority or there is more than one
when is the prefix hydroxy used for OH?
when CHO or COOH take priority or there is more than one
