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Help with difficult structures?

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  1. Offline

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    Need the structural (stick) formula for these molecules:

    N-propylbutanamide

    4-methylhexan-2-ol

    butan-1 4-dioic acid

    methyl methylamine

    Need to name these molecules:

    1)
    O
    ||
    CH3 CH2 CH2 C-NH CH3

    2)

    CH3
    |
    CH3 CH2 N CH3

    3)

    CH3COBr
    O
    ||
    CH3 C--OCH2CH3

    3)

    CH2OH
    |
    CHOH
    |
    CH2OH

    Thanks
  2. Offline

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    What have you got so far?
  3. Offline

    ReputationRep:
    I've attempted these but I know they're incorrect
  4. Offline

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    So? Your mistakes are important in learning how to rectify them

    N-propylbutanamide
    N-propyl = 3 carbon chain attached to a nitrogen
    butan = 4 carbon chain
    amide = err amide :p:

    4-methylhexan-2-ol
    4-methyl = a CH3 group attached at position 4
    hexan = 6 carbon chain
    2-ol = hydroxy group in the 2 position

    that help at all?
  5. Offline

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    (Original post by EierVonSatan)
    So? Your mistakes are important in learning how to rectify them



    N-propyl = 3 carbon chain attached to a nitrogen
    butan = 4 carbon chain
    amide = err amide :p:



    4-methyl = a CH3 group attached at position 4
    hexan = 6 carbon chain
    2-ol = hydroxy group in the 2 position

    that help at all?
    Thanks. Is this right for N-propylbutanamide?
    http://i46.tinypic.com/25plkdu.jpg
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    http://i50.tinypic.com/2ed8vo8.jpg 4-methylhexan-2-ol?
  7. Offline

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    (Original post by GaryGlobetrotter)
    Thanks. Is this right for N-propylbutanamide?
    http://i46.tinypic.com/25plkdu.jpg
    I explained that badly, sorry

    Butanamide is CH3CH2CH2CONH2

    The N-propyl bit replaces one of the N-H's above to become:

    CH3CH2CH2CONHCH2CH2CH3

    :yy:

    butan-1 4-dioic acid
    butan = 4 carbon chain

    1,4-dioc acid = carboxylic acids at the 1 and 4 positions

    methyl methylamine
    Not sure if that's a valid name for something, do you mean dimethylamine?
  8. Offline

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    Thanks again.

    I'll ask my teacher about the 'methyl methylamine'.

    Could you provide me with some of your guidance in naming the structures please?
  9. Offline

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    Ahh, the positions messed up! -_-

    Here they are: http://i45.tinypic.com/10xfpt3.jpg
  10. Offline

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    (Original post by GaryGlobetrotter)
    Could you provide me with some of your guidance in naming the structures please?
    I can only make out the last one from your drawings :o:

    It has a 3 carbon chain => propan
    it has 3 alcohol groups => triol

    As the OH's are on a different carbon each: propan-1,2,3-triol is the name

    edit: ah okay

    e) longest chain = ethan
    it's an amine
    there are 2 methyl groups attached to the nitrogen

    f) longest chain = ethan
    COBr = acyl bromide

    g) it's an ester with two carbon chains, which are both ethan
  11. Offline

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    (Original post by EierVonSatan)
    I can only make out the last one from your drawings :o:

    It has a 3 carbon chain => propan
    it has 3 alcohol groups => triol

    As the OH's are on a different carbon each: propan-1,2,3-triol is the name

    edit: ah okay

    e) longest chain = ethan
    it's an amine
    there are 2 methyl groups attached to the nitrogen

    f) longest chain = ethan
    COBr = acyl bromide

    g) it's an ester with two carbon chains, which are both ethan
    Thanks!

    Ok, so...

    e) N-2methylethanamine

    f) Acylethylbromide

    g) Ethyl ethanoate

    ?
  12. Offline

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    (Original post by GaryGlobetrotter)
    e) N-2methylethanamine
    Close. N,N-dimethylethanamine

    The two N's indicate position (like numbers do) the di means there are two of them

    f) Acylethylbromide
    Ethanoyl bromide

    g) Ethyl ethanoate
    :yy:
  13. Offline

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    (Original post by EierVonSatan)
    Close. N,N-dimethylethanamine

    The two N's indicate position (like numbers do) the di means there are two of them



    Ethanoyl bromide



    :yy:
    Thanks for all of your help today. Rep given.
  14. Offline

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    (Original post by GaryGlobetrotter)
    Thanks for all of your help today. Rep given.
    Welcome :yy:

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