From: Marko Hapke (marko.hapke$##$mail.uni-oldenburg.de)
Date: Thu Oct 10 2002 - 11:52:39 EDT
A very good protecting group (easy to make, stable against many
nucleophile reagents, easy deprotection) was published by Ragan et al.
(Org. Synth. 2000, 78, 63-72 and Synthesis 1998, 1599-1603). For use
with nucleophile compounds like organozinc reagents see: Lützen, Hapke
Eur. J. Org. Chem. 2002, 2292-2297.
Marko
>Dear collegues,
> Does anyone know about the different
>types of N protection reagents,their
>efficacies,limitations,easeofseparation,inertness,etc,
>to certain reagents particularly Grignard reagents
>(RMgX), where the Nitrogen needs protection.(The
>grignard reagent should not react with it). Is there
>any such ideal reagent? Please let me know and if
>possible a Journal reference where its use is cited.
>I will appreciate all assistance.Thanks,
>jaininder2002$##$yahoo.com
>
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