Natural Science Forum / Chemistry / Organic Synthesis / July 2003

To begin with, your professor is right - an acid catalyzed alkene hydroamination
just isn't going to happen in the way you propose.  As an alternative, check out
the Ritter reaction.  As for your observations, if I am correct in my assumption
that the 1% ammonia solution you used is ...

I need help.
I have read in few articles that p-nitrobenzyl bromide decomposite in
environment of reaction. It's especially in base environment. What is
the reason of decomposition and what are the product of decomposition

Does anyone know of a reliable method to obtain enantiopure
diaminocyclohexane?
Jacobsen and others resolve it via the tartrate salt, but releasing
the free base is turing into an oversized nightmare - am I missing

Sorry I don't know if I should be posting this in a technical forum...
Anyway, I need to make a solution using a proteasome inhibitor
(Carbobenzoxy-L-isoleucyl-(gamma)-t-butyl-L-glutamyl-L-alanyl-L-leucinal.
Z-Ile-Glu(OBut)-Ala-Leu-H (aldehyde).)It's a Cell-permeable inhibitor

On 30 Jun 2003 13:47:52 -0400, "Eric Lucas" <ealucas@worldnet.att.net>
wrote:

Is it
possible to make NO2 by reacting Urea with an oxidizer? If so, which oxidizer is suitable?
Thanks,
Tal P

thank you