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Natural Science Forum / Chemistry / Organic Synthesis / September 2004



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New Nitro Reduction & Saturation of double bond CATalyst

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ZaLTaR - 19 Sep 2004 15:28 GMT
I was looking for a (new ?) way to the reduction of 2-nitropropenes
type compounds. Because the reduction with LAH or NaBH4 & Pd-C or even
electrolytic reduction is a bit of pain in your a.s if you have to
reduce large amounts. How does the Industrial Chemical Manufactor
handels reduction of Nitro to Amine and saturation of the double-bond
? I, thought that large reductions are best reduced with a IV Catalyst
and a acid, like 5% Pd-C in Acetic Acid, But expensive. When searching
in my chamical warehouse I found something that grabs my attention. As
discribed it's reduction of nitro 2 amine and saturation of double
bonds, the Nickel on Silica catalyst seems to be very intresting to do
some experimenting with. I think this catalyst works almost yust the
same as Pd-C or Pt-C by doing the reduction of the XXX-2-Nitropropene
in Acetic Acid. My periodic table tells me alot of secrets you now ?
Anyway's I needed to know how much less reduction does that NiSi have
compared with Pd-C ? I dont know for sure this method as accurate but
the Molucar weight of Pd+C minus the MW of Ni+Si was about 31% less
reducing power but also less development of heat in new applications
using this very cheap compound compaird with LAH or using a Pd-C as
catalyst. Any ways, I gonna buy that stuff, it's cheap, and I see
theoretical,,

Well , I am alot more happey if I cann talk about this, but I never
did''nt any chemistry school lessons, in fact Your cann learn alot
from internet, very cool

THANKS FOR THE SUPPORT

And let me put up to you this way.... cause ....
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Paul J. Franklin(moderator - sci.chem.organic.synthesis)
http://organicworldwide.net/sci.chem.organic.synthesis
Georgia State University <chepjf@panther.gsu.edu>
Atlanta, GA

Ron Jones - 20 Sep 2004 21:16 GMT
> I was looking for a (new ?) way to the reduction of 2-nitropropenes
> type compounds. Because the reduction with LAH or NaBH4 & Pd-C or even
[quoted text clipped - 9 lines]
> same as Pd-C or Pt-C by doing the reduction of the XXX-2-Nitropropene
> in Acetic Acid. My periodic table tells me alot of secrets you now ?

> Anyway's I needed to know how much less reduction does that NiSi have
> compared with Pd-C ? I dont know for sure this method as accurate but
[quoted text clipped - 3 lines]
> catalyst. Any ways, I gonna buy that stuff, it's cheap, and I see
> theoretical,,

> Well , I am alot more happey if I cann talk about this, but I never
> did''nt any chemistry school lessons, in fact Your cann learn alot
> from internet, very cool

> THANKS FOR THE SUPPORT

Nitropropene.  Sounds unstable is *is* unstable.  I once had the occassion
to test some in an accellerating rate calorimeter - it was slowly running
away at room temperature (the chemist who made it, couldn't understand why
it went black in the course of one week - lucky he didn't make too much...)

Signature

--
Ron Jones

Don't repeat history, see unreported near misses in chemical lab/plant at
http://www.crhf.org.uk

--
Paul J. Franklin(moderator - sci.chem.organic.synthesis)
http://organicworldwide.net/sci.chem.organic.synthesis
Georgia State University <chepjf@panther.gsu.edu>
Atlanta, GA

 
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