ORGLIST: diphenyl ether (Rossana Ferrara)

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From: ricardo mendonca (ricfmendonca$##$gmail.com)
Date: Tue Oct 14 2008 - 15:32:22 EDT


Hi
You could add an antisolvent (hexane seems good) and force you compound to
crystallize out from diphenyl ether. Then filter and wash with hexane.
Also, small quantities of xylene (a case I know of, but it may also work
with diphenyl ether) can be removed by passing a crude reac. mixture by a
flash silica column, and eluting your compound with a proper eluent. In this
case you'll need to concentrate the reac. mixture or use the minimum amount
of diphenyl ether in your reac. mixture.
I would go for the 1st option, try to crystallize out your compound
with hexane, as you know its a poor solvent for your product.
good luck´

Ricardo mendonça

On Thu, Oct 9, 2008 at 5:00 PM, <everybody-request$##$orglist.net> wrote:

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> Date: Thu, 09 Oct 2008 11:22:52 +0200
> From: Rossana Ferrara <rossana.ferrara$##$unimi.it>
> Subject: ORGLIST: diphenyl ether
> To: everybody$##$orglist.net
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> Dear All,
> i'm trying to make a "ene" reaction in diphenyl ether. I hope to be able to
> remove the solvent with different extraction (my product is soluble in DCM
> and not in hexane so i thought to extract before with exane to remove PhOPh
> and after with dcm for my compound but it does not work).
> I know that the boiling point of PhOPh is around 250? C so i don't think
> that evaporat it is a good solution.
> Any idea to remove it???????
> thanks a lot
> Rossana
>
> Rossana Ferrara
> PhD student
> Istituto di Chimica Farmaceutica e Tossicologica "P.Pratesi"
> University of Milan
>
> e-mail:rossana.ferrara$##$unimi.it <e-mail%3Arossana.ferrara$##$unimi.it>;
> rossanaferrara$##$hotmail.com.
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-- 
Ricardo Mendonça

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