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NAMING FUNCTIONAL GROUPS

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Presentation on theme: "NAMING FUNCTIONAL GROUPS"— Presentation transcript:

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2 NAMING FUNCTIONAL GROUPS

3 Functional Groups that have a prefix
Branched alkanes See hydrocarbons notes

4 Haloalkanes Name the longest carbon chain
Give a prefix for the halogen: Flouro Chloro Bromo Iodo Number the location of the halogen so that it has lowest # possible If more than one halogen, use di/tri prefix

5 Functional Groups that have a different ending than -ane
Alkenes/Alkynes Find longest carbon chain Add –ene for a double bond ending or –yne for a triple bond Number the location of the double bonds so it has lowest # possible

6 Alcohols Name longest chain Use ending –anol Number carbons to figure out what carbon the –OH group is on Number can go at the front or right before ending. The latter is often used when there is more than one functional group on a molecule

7 R-Group is a carbon group
Classification R-Group is a carbon group Locate the carbon to which the functional group is attached primary 1 - attached to 1 R group (at the end of a carbon chain) secondary 2 - attached to 2 R groups (at a branch of a carbon chain) tertiary 3 - attached to 3 R groups

8 Carboxylic Acids Name longest chain Use ending –anoic acid

9 Aldehydes/Ketones Name longest chain If carbonyl (C=O) is
on the end: Use ending –anal no number needed unless higher priority functional group is on molecule in the middle: Use ending -anone Number carbons to figure out what carbon the C=O group is on Number can go at the front or right before ending. The latter is often used when there is more than one functional group on a molecule CH3 ethanal

10 Amines Name longest carbon chain Add –anamine ending If more than one chain attached to N, use branching rules as with alkanes but use N instead of number of carbon to show alkyl group is attached to nitrogen.

11 Amines Name longest carbon chain Add –anamine ending If more than one chain attached to N, use branching rules as with alkanes but use N instead of number of carbon to show alkyl group is attached to nitrogen.

12 Amines Name longest carbon chain Add –anamine ending If more than one chain attached to N, use branching rules as with alkanes but use N instead of number of carbon to show alkyl group is attached to nitrogen.

13 Amines Name longest carbon chain Add –anamine ending If more than one chain attached to N, use branching rules as with alkanes but use N instead of number of carbon to show alkyl group is attached to nitrogen.

14 Amides Name longest carbon chain Add –anamide ending If Nitrogen has substituents, use “N-(substituent)” name and add as prefix

15 Amides Name longest carbon chain Add –anamide ending If Nitrogen has substituents, use “N-(substituent)” name and add as prefix

16 Amides Name longest carbon chain Add –anamide ending If Nitrogen has substituents, use “N-(substituent)” name and add as prefix

17 Esters Count number of carbons in chain attached to carbonyl (C=O) including carbonyl’s carbon Add –anoate ending Name alkyl group attached to O and add as prefix

18 Esters Count number of carbons in chain attached to carbonyl (C=O) including carbonyl’s carbon Add –anoate ending Name alkyl group attached to O and add as prefix

19 Esters Count number of carbons in chain attached to carbonyl (C=O) including carbonyl’s carbon Add –anoate ending Name alkyl group attached to O and add as prefix

20 Esters Count number of carbons in chain attached to carbonyl (C=O) including carbonyl’s carbon Add –anoate ending Name alkyl group attached to O and add as prefix

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23 Ethanoic acid

24 Ethanoic acid Ethanol

25 Ethanoic acid Ethanol Ethyl Ethanoate

26 Ethanoic acid Ethanol Ethyl Ethanoate Water

27 CONDENSATION REACTION!!!!!!!!
Ethanoic acid Ethanol Ethyl Ethanoate Water CONDENSATION REACTION!!!!!!!!

28 In the first step, the ethanoic acid takes a proton (a hydrogen ion) from the concentrated sulphuric acid. The proton becomes attached to one of the lone pairs on the oxygen which is double-bonded to the carbon The transfer of the proton to the oxygen gives it a positive charge, but it is actually misleading to draw the structure in this way (although nearly everybody does!).

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