Zinc Borohydride Reduction of α-Amino Ketones: A Highly Diastereoselective Synthetic Route to anti-γ-Hydroxy-β-amino Alcohols
作者:Saumitra Sengupta、Debasis Das、Somnath Mondal
DOI:10.1055/s-2001-16773
日期:——
A highly diastereoselective synthesis of anti-γ-hydroxy-β-amino alcohols via Zn(BH4)2 reductions of serine derived α-amino ketones is described. The latter were prepared from a serine derived γ-amino-β-ketosulfone via a α-alkylation-desulfonation sequence.
Zinc-Mediated Stereoselective Barbier Allylation of <i>N</i>-Carbethoxy-α-amino Ketones in Aqueous Solution
作者:Lucia Aguiar、Gabriel Resende、O. Antunes
DOI:10.1055/s-2004-836039
日期:——
Zinc-mediated aqueous allylic Barbier reaction of N-carbethoxy-α-amino phenylketones was carried out with good diastereoselectivity (up to 95% de), leading to vicinal amino alcohols. The corresponding reaction using N-carbethoxy-α-amino methylketones did not present good facial diastereoselectivity.