One-pot combination of enzyme and Pd nanoparticle catalysis for the synthesis of enantiomerically pure 1,2-amino alcohols
作者:Joerg H. Schrittwieser、Francesca Coccia、Selin Kara、Barbara Grischek、Wolfgang Kroutil、Nicola d'Alessandro、Frank Hollmann
DOI:10.1039/c3gc41666f
日期:——
2-azido ketones and Pd nanoparticle-catalysed hydrogenation of the resulting azido alcohols, which gives access to both enantiomers of aromatic 1,2-amino alcohols in high yields and excellent optical purity (ee >99%). Furthermore, we demonstrate the incorporation of an upstream azidolysis and a downstream acylation step into the one-pot system, thus establishing a highly integrated synthesis of the antiviral
Abstract New N-dichloroacetyl-5-aryl-1,3-oxazolidines 4 were synthesized by cycloaddition reaction of an aryl substituted hydroxyalkylamine 1 with aldehyde or ketone 2, followed by acylation, without isolation of the intermediate product 3. The structures of compounds 4 were determined by spectral and elemental analyses. The structure of 4b was determined by an X-ray crystallographic analysis. The