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DOI: 10.1055/s-0030-1257938
First General Route to Substituted α-Arylamino-α′-chloropropan-2-ones by Oxidation of N-Protected Aminohalohydrins: The Importance of Disrupting Hydrogen Bond Networks
Publikationsverlauf
Publikationsdatum:
30. Juli 2010 (online)
Abstract
The presence of a network of intra- and intermolecular hydrogen bonds in β-arylamino alcohols, confirmed by both IR spectroscopy and computer modeling, inhibits their oxidation to the corresponding α-amino ketones. A straightforward protocol, including highly regioselective protection (as carbamates) and subsequent oxidation with Dess-Martin periodinane, affords near quantitative yields of the desired N-protected ketones, which upon mild treatment with iodotrimethylsilane leads to a series of differently functionalized α-arylamino-α′-chloro ketones.
Key words
amino alcohols - amino ketones - oxidation - protecting groups - hydrogen bonding
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