Re: ORGLIST:catalyst removal anybody?

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From: Yuehui Zhou (yuehuizhou$##$hotmail.com)
Date: Thu Nov 06 2003 - 20:19:33 EST




If your product can be distilled out under high vaccum or extracted by non-polar solvents, you may try to use ILs as your reaction media. The catalyst will leave in there and often you can reuse it

Y. Zhou

>From: mkinch@umsis.miami.edu
>To: everybody@orglist.net
>Subject: ORGLIST:catalyst removal anybody?
>Date: Wed, 05 Nov 2003 14:19:23 -0500 (EST)
>
>Hello everybody,
> I was wondering if anyone had any experience or inventive
>ideas for leaving behind a big, inorganic, heavy, nasty catalyst in organic
>media. My (FW 3432) exclusively tungsten-oxygen catalyst (stable around 380 C)
>has gummed up our GC-MS polar column after I'd tried to precipitate it with
>water inside the acetonitrile solvent I was using. Apparently, I didn't
>precipitate all of it. I have to leave it behind as it is now inside the wool
>and giving false positive oxidations for the sulfides (bp ~290) we are
>testing. Thanks very much. Mark (bewildered grad student)
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