Hey there! Sign in to join this conversationNew here? Join for free

How to deduce the structure of 2,3-dihydroxybutanedioic acid Watch

    • Thread Starter
    Offline

    7
    ReputationRep:
    Thanks
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by Mina_)
    Thanks
    All organic names are made of:

    Root (number of carbons) - in this case but = 4
    Suffix (nature of functional groups on chain) - in this case carboxylic acid
    Prefix (any other functional groups) - in this case hydroxy group
    Locants (where these functional groups are on the chain) - in this case the hydroxy groups are on positions 2 and 3
    Multipliers (go before prefix and suffix to indicate more than one, eg di-, tri-, tetra-, etc) - in this case the carboxylic acid suffix has a "di" meaning "two of" and so does the hydroxy.

    Put it all together:

    HOOCCH(OH)CH(OH)COOH

    Name:  nomenclature_diagram.jpg
Views: 45
Size:  21.3 KB
    • Thread Starter
    Offline

    7
    ReputationRep:
    (Original post by charco)
    All organic names are made of:

    Root (number of carbons) - in this case but = 4
    Suffix (nature of functional groups on chain) - in this case carboxylic acid
    Prefix (any other functional groups) - in this case hydroxy group
    Locants (where these functional groups are on the chain) - in this case the hydroxy groups are on positions 2 and 3
    Multipliers (go before prefix and suffix to indicate more than one, eg di-, tri-, tetra-, etc) - in this case the carboxylic acid suffix has a "di" meaning "two of" and so does the hydroxy.

    Put it all together:

    HOOCCH(OH)CH(OH)COOH

    Name:  nomenclature_diagram.jpg
Views: 45
Size:  21.3 KB
    Great, thanks! So if its '-dioic acid', is the COOH always on either end of the molecule?
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by Mina_)
    Great, thanks! So if its '-dioic acid', is the COOH always on either end of the molecule?
    At this level, yes.

    As molecular structures get more complex the rules of nomenclature get horribly complex too. There are hundreds of pages dedicated to IUPAC nomenclature 8if you are really bored on a wet, windy night)

    http://www.acdlabs.com/iupac/nomenclature/
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Brussels sprouts
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.