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CHEMISTRY SS 3 NOTE

CHEMISTRY SS 3 NOTE. WEEK: 02 DATE: 22/09/2014 DURATION: 80MINS TOPIC: RULES FOR NAMING ORGANIC COMPOUNDS CONTENT The basic rules for naming organic compounds are as followings:

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CHEMISTRY SS 3 NOTE

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  1. CHEMISTRY SS 3 NOTE • WEEK: 02 • DATE: 22/09/2014 • DURATION: 80MINS • TOPIC: RULES FOR NAMING ORGANIC COMPOUNDS CONTENT The basic rules for naming organic compounds are as followings: 1. Take the longest continuous carbon chain as the root hyrocarbon and name it according to the number of carbon atom it contains, adding the appropriate suffix 2. Number the carbon atoms in the root hydrocarbon from the end which will give the lowest number to the substituent group and then the prefixes. 3. Indicate the other substituents by prefix proceeded by number to show their position on the carbon chain. 4. When two or three alkyl groups are aresubstituents to one organic compound, they should be named based on the one that come first alphabetically

  2. EXAMPLES • CH3CH2CHCH2CHCH3 C2H5 CH3 4-ethyl-2-methylhexane • CH3CHCH2C CCH3 Cl 4-chloropent-2-ene • H2C CH2 H2C CH Br Bromocyclobutane

  3. STEREOCHEMISTRY Stereochemistry is the study of structure in three dimensions. Here, we shall study the phenomenon of isomerism. ISOMERISM Isomerism is the existence of two or more compounds with the same molecular formula but different structural. E.g, butane has two Isomers 1. CH3CH2CH2CH3 n-butane • CH3CHCH3 CH3 2-methylpropane

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