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Nomenclature and
Isomerism in Organic
Chemistry
AQA Chemistry Unit 4




Frihah

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Naming organic compounds
be able to apply IUPAC rules for nomenclature not only to the simple organic compounds, limited to chains
with up to 6 carbon atoms, met at AS, but also to benzene and the functional groups listed in this unit




Type of compound Structure of group Example
Carboxylate…

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know that E-Z isomerism and optical isomerism are forms of stereoisomerism



isomerism




structural
stereoisomerism
isomerism




positional chain functional geometrical optical




know that an asymmetric carbon atom is chiral and gives rise to optical isomers which exist
as non super-imposable mirror images and differ only in their effect on plane polarised…

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Appreciate that drug action may be determined by the stereochemistry of the
molecule and that different optical isomers may have very different effects




SAFE




NOT SAFE

understand the meaning of the terms enantiomer and racemate




Enatiomer
These are optical isomers. They have the same
molecular and structural formula but different…

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a) Name organic compounds involving all the functional groups introduced at AS level
and also secondary and tertiary amines, quartenary ammonium salts, acid chlorides, acid
anhydrides, amides, esters and N-substituted amides, and simple organic compounds
involving two functional groups (such as amino acids)


b) Define the terms chiral, optical isomer…

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5
Isomerism

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