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Naming Cyclic Organic Compound

  1. Mar 12, 2012 #1

    jmm

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    Hey,

    How would I name (IUPAC) the isomer of C2H4O that is a triangular ring with C at two vertices and O at the third?

    Also, I'm trying to name the 11 isomers of C3H6O. So far I have 10 and I can't seem to get the last one. The ones I have are:

    propanal
    propan-2-one
    prop-2-en-1-ol
    prop-1-en-2-ol
    (Z)-prop-1-en-1-ol
    (E)-prop-1-en-1-ol
    methoxyethene
    cyclopropanol
    and two rings like the one I described above with O at a vertex

    I hope those names are right but please tell me if they don't make sense and I'll try another one.

    Any help will be really appreciated. Thanks!
     
    Last edited: Mar 12, 2012
  2. jcsd
  3. Mar 12, 2012 #2
  4. Mar 12, 2012 #3

    jmm

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    Yeah I do mean ethylene oxide. I noticed that the IUPAC name is oxirane. Is there a systematic way of naming these or is it just a compound with an arbitrary name?

    The last one's not really a big issue. It was for an assignment I had earlier but the structure of all 11 isomers was kind of irrelevant to the actual question. Thanks for the try though :)

    Edit: I just found this, regarding the naming of cyclic ethers:
    http://academicearth.org/lectures/cyclic-ethers-and-epoxide-naming
     
  5. Mar 13, 2012 #4
    What two ring structures do you have? I can draw three here.
     
  6. Mar 13, 2012 #5

    jmm

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    I have cyclopropanol and I guess the other two might be called 1,3-epoxypropane and 1,2-epoxypropane.
     
  7. Mar 13, 2012 #6
    OK, look at the 1,2-epoxypropane one, or better make a model of it. Now look at the mirror image...
     
  8. Mar 13, 2012 #7

    jmm

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    Oh so they're enantiomers? So you'd have (R)-1,2-epoxypropane and (S)-1,2-epoxypropane?
     
  9. Mar 13, 2012 #8
    Yes, that would be my take on the answer
     
  10. Mar 13, 2012 #9

    jmm

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    Yeah that makes sense. Thanks for your help.
     
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