Organic nomenclature

Nomenclature of organic compound

To study organic chemistry first, we need to know the names of the organic compounds. In this page, I can be dealing with the name of organic compounds, the systematic method of nomenclature and the IUPAC.

Naming unsaturated hydrocarbons

1. One method of nomenclature to name the alkenes from the corresponding alkanes by changing the suffix one of the latter into ylene.

Methylene from methane, ethylene from ethane, propylene from propane, etc. isomer differs only in the position of the double bond are prefixed by Greek letter or number which indicates the position of the double bond.

CH₂ = CH₂
ethylene

CH₃CH₂CH = CH₂
1-butylene or α-butylene

2. Another method of nomenclature to consider ethylene as the parent substance and higher member of derivatives of ethylene.

If the compound mono-substituted then no difficulty arises in naming but the compound disubstituted derivative of ethylene isomerism if possible.

Since the alkyl groups are of attached the same or different carbon atoms. When the groups are attache to the same carbon atom of the alkenes named as the asymmetrical compound.
When the groups are attache to the different carbon atom of the olefins named as the symmetrical compound.

CH2 - CH = CH2
methyl ethylene

CH3 - CH2 - CH = CH2
ethyl ethylene

CH3C(CH₃) = CH2
as - dimethyl ethylene

CH3 - CH2 = CH - CH3
s - dimethyl ethylene

In the IUPAC system also we can be named the organic compound. According to the IUPAC system of nomenclature, the class of suffix of the alkenes -ene and so, the series becomes alkene series.

CH2 - CH = CH2
prop - 1 - ene

CH3 - CH2 - CH = CH2
but - 1 - ene

CH3C(CH3) = CH2
2 - methylprop - 1 - ene

CH3 - CH2 =CH - CH3
but - 2 - ene

Organic nomenclature of different systems, common naming of organic compounds and IUPAC naming of organic compounds

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