I've found it !

10% Pd on carbon with formic acid in methanol : High yield (82-90%)
exemple : 3-[(p-Nitrobenzoyl)oxy]propyne in 3-[(p-Aminobenzoyl)oxy]propyne : 80%
p-Nitrophenol: 91%
o-Nitrophenol: 89%

Ref : D. C. Gowda, S. Gowda, Indian Journal of Chemistry, Vol 39B, September 2000, p 709-711

Good luck

SR

> Objet :	RE: ORGLIST:  Reduction of N-nitrosocarbamate
>
> Hi,
>
> there is a recent publications dealing with the reduction of nitroaryl compounds
> with palladium on charcoal and Hydrogen (wich could be safely generated
> from ammonium formate). Maybe this can be used
> in your case. Unfortunately, I can't find it in the mess that is my desk
> but I'll search and let you know.
>
> It's a fairly recent publication (this year).
>
> SR
>
> ----------
> De : 	zabicky@bgumail.bgu.ac.il[SMTP:zabicky@bgumail.bgu.ac.il]
> Date :	mardi 1 mai 2001 12:40
> A :	Multiple recipients of list orglist
> Objet :	Re: ORGLIST:  Reduction of N-nitrosocarbamate
>
> Hello Antonio,
>
> Perhaps the simple reduction of nitrobenzene to aniline with HCl-Fe will
> somehow work in your case.
>
> All the best,
>
> Jacob
>
> At 13:24 23/4/1, antonio regla wrote:
> >Dear List Members:
> >
> >I am looking for a good reduction procedure or reference for the reduction
> >of an n-nitrosocarbamate, does anyone know of such a reagent? I have heard
> >that Zn may be used or stannous chloride, or perhaps some kind of
> >hydrosulfite reagent. I would appreciate if you share with me any
> >information regarding this reduction.
> >
> >Thanks.
> >
> >Antonio Regla
> >
> >Escuela de Farmacia
> >
> >Universidad Autonoma de Morelos
> >
> >Cuernavaca, Mexico
> >
> >
> >
> >---------------------------------
> >Do You Yahoo!?
> >Yahoo! Auctions - buy the things you want at great prices
> ><P>Dear List Members:</P>
> ><P>I am looking for a good reduction procedure or reference for the
> >reduction of an n-nitrosocarbamate, does anyone know of such a reagent? I
> >have heard that Zn may be used or stannous chloride, or perhaps some kind
> >of hydrosulfite reagent. I would appreciate if you share with me any
> >information regarding this reduction. </P>
> ><P>Thanks.</P>
> ><P>Antonio Regla</P>
> ><P>Escuela de Farmacia</P>
> ><P>Universidad Autonoma de Morelos</P>
> ><P>Cuernavaca, Mexico</P><p><br><hr size=1><b>Do You Yahoo!?</b><br>
> ><a href="http://auctions.yahoo.com/">Yahoo! Auctions</a> - buy the things
> >you want at great prices
>
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