ORGLIST: removal of NMP

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From: Amanda Lucille Kohnen (kohnen$##$MIT.EDU)
Date: Mon Jul 21 2008 - 13:18:37 EDT


Usually NMP can be removed under high vacuum with a decent vacuum pump
or, even better, with a lyophilizer. Since standard methods of
removal aren't working, I would suggest dissolving your product in an
organic solvent like CH2Cl2 (that is not miscible with water at all)
and extracting out the NMP with a few portions of brine.

-LK

On Jul 21, 2008, at 12:00 PM, everybody-request$##$orglist.net wrote

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> 1. Remove 2-methyl Pyrrolidone solvent Completely
> (Manjunath Channapur)
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> Message: 1
> Date: Mon, 21 Jul 2008 12:49:57 +0530
> From: "Manjunath Channapur" <channapur$##$gmail.com>
> Subject: ORGLIST: Remove 2-methyl Pyrrolidone solvent Completely
> To: everybody$##$orglist.net
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> Dear All
> how to remove 2-methyl Pyrrolidone(N-methyl Pyrrolidone) solvent from
> product completely.
> I tried with water wash(in excess)
> Is there any other method to remove it.
> All comments are appreciated
>
>
> Best Regds
> Manjunath Channapur
> Research Scientist
>
> --
> Manjunath
>
>
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Amanda Lucille Kohnen

PhD Candidate
Department of Chemistry
77 Mass Ave., Rm 18-263
Cambridge, MA 02139
kohnen$##$mit.edu
phone: 617-253-1835
fax: 617-252-1504


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