Alcohol Nomenclature IUPAC Rules for the Nomenclature of Alcohols.

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Presentation transcript:

Alcohol Nomenclature IUPAC Rules for the Nomenclature of Alcohols

Step 1 Locate the longest continuous chain of carbon atoms which contains the "hydroxy" (–OH) group. This chain will serve to identify the parent compound. CH3 CH2 CH2 OH or CH3CHOHCH3 Parent compound is prop- because of 3 C chain.

Step 2 Number the chain so as to give the carbon atom which is bonded to the –OH group the lowest possible number. 1 2 3

Step 3 A number is included before the name of the parent compound to indicate the position of the –OH group. 1 2 3 2-propan-suffix

Step 4 The suffix "ol" is added to the name to indicate that the molecule is an alcohol. 1 2 3 2-propananol

Name the alcohols given below. 3-pentanol a. ______________ 2-butanol b. _______________ 3-methyl-2-butanol c.________________ 4,5-dimethyl-2-hexanol d. ________________ 4-ethyl-1-hexanol e. _________________

Draw the structural formula for the following alcohols 4,4–dimethyl–2–hexanol 3,4–diethyl–2–heptanol