Benzene Compound
IUPAC & GOC of Class 12
Benzene Compound
For naming aromatic compounds, no special rules are required, but are named substituted benzene.
The benzene ring is considered to be a parent and alkyl groups, halogens and the nitro group are named as prefix to benzene.
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1, 3, 5 – tribromobenzene |
2 – chloro – 4 – nitro aniline |
2 – hydroxyl – 4 – nitro – benzoic acid
When a benzene ring is attached to an alkane chain with a functional group or to an aklane chain of two or more carbon atoms, then benzene is considered as a substituent (phenyl) instead of a parent.
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When more than one group is present on benzene ring then following prefix are giving to certain organic compound.
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2 & 6 = Ortho or ‘o’ 3 & 5 = Meta or ‘m’ 4 = Para or ‘p’ With respect to G. |
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The following names are given to certain aromatic hydrocarbon residues formed by the loss of one or more hydrogen atoms from the parent hydrocarbon.
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ALICYCLIC (CYCLIC COMPOUNDS)
IUPAC name-cycloalkane (saturated), cyclo alkene, cyclo alkyne (unsaturated)
Examples:
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Note:
Naming of cyclic compounds containing functional group – same as open chain compound.
- Introduction
- Hydrocarbon
- Functional Group
- Acyl Goup
- Benzene Compound
- Bond Cleavage
- Reaction Intermediates
- Carbocations (Earlier Called As Carbonium Ions)
- Carbanions
- Free Radicals
- Inductive Effect (Polar Nature Of Covalent Bonds)
- Electromeric Effect
- Resonance And Mesomeric Effect
- Hyperconjugation
- Mechanism Of Organic Reaction
- Isomerism
- Stereoisomerism
- Fischer Projection