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Topic: How might you separate an amine from a neutral organic compound?  (Read 4737 times)

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Offline luketapis

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How might you separate an amine from a neutral organic compound?

Offline Borek

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Re: How might you separate an amine from a neutral organic compound?
« Reply #1 on: March 06, 2013, 02:04:44 PM »
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Offline luketapis

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Re: How might you separate an amine from a neutral organic compound?
« Reply #2 on: March 06, 2013, 02:17:34 PM »
I am not looking for answer. I more looking for a tip, something what I could start from.
My assumption is that I could protonate amine by adding acid but then I could protonate organic compound as well.
Or I could dissolve amine in solvent which is not very good for dissolving  organic compound.

Offline Babcock_Hall

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Re: How might you separate an amine from a neutral organic compound?
« Reply #3 on: March 06, 2013, 06:54:49 PM »
You are doing fine.  Do we know specifically which organic molecule, or just organic in general?  What property found in tables might tell us whether or not we could protonate an amine without protonating the organic molecule?

Offline luketapis

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Re: How might you separate an amine from a neutral organic compound?
« Reply #4 on: March 06, 2013, 07:10:58 PM »
neutral organic compound in general.
Polarity of molecule?

Offline Babcock_Hall

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Re: How might you separate an amine from a neutral organic compound?
« Reply #5 on: March 06, 2013, 09:06:07 PM »
I was thinking of pKa values.  Maybe it would be easier to start with a very simple organic molecule, and then move to something slightly more challenging.  Suppose I said I wanted to separate hexane from an amine.  How could I do this with protonation?  Would protonation of hexane be a problem?

Offline luketapis

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Re: How might you separate an amine from a neutral organic compound?
« Reply #6 on: March 11, 2013, 10:10:12 PM »
not at all, but it would be a problem for hexene  :(

Offline luketapis

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Re: How might you separate an amine from a neutral organic compound?
« Reply #7 on: March 18, 2013, 08:18:34 PM »
nobody?

Offline Arkcon

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Re: How might you separate an amine from a neutral organic compound?
« Reply #8 on: March 18, 2013, 09:49:24 PM »
My assumption is that I could protonate amine by adding acid but then I could protonate organic compound as well.

Is this really true for a neutral organic compound?  Do you really believe hexane, or benzene can accept a proton?  What compound do you expect to get, in that situation?
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Babcock_Hall

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Re: How might you separate an amine from a neutral organic compound?
« Reply #9 on: March 19, 2013, 09:53:13 AM »
luketapis,

A strong acid might cause isomerization of a double bond in some instances (I am thinking of carotenoids).  Is that your concern?  If so, I could imagine some ways around this problem.

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