Synthesis and characterization of chiral di(N-protected-α-amino)diazo-β-diketones from α-diazoketones and imidazolides derived from amino acids
作者:Ibrahim A.M. Saraireh
DOI:10.1016/j.tetlet.2012.01.093
日期:2012.4
Di(N-protected-alpha-amino)diazo-beta-diketones were prepared by the reaction of activated N-protected-alpha-amino acids (imidazolides) with alpha-diazoketones, derived from natural amino acids, in the presence of lithium diisopropylamide in tetrahydrofuran as the solvent at -78 degrees C. (C) 2012 Elsevier Ltd. All rights reserved.
Complexation of Chiral Di (N-Protected a-Amino)-b-Diketones with Some Transition Metals
作者:Ibrahim A.M. Saraireh
DOI:10.14233/ajchem.2013.14080
日期:——
Chiral Di (N-protected a-amino)-b-diketones and its transition metal complexes have been synthesized. Di(N-protected a-amino)-b-diketones were prepared by reaction of activation of N-protected-a-amino acids (imidazolide) with a-diazoketones derived from natural amino acids in presence of lithium diisopropyl amid in tetrahydrofuran as a solvent at -78 ºC and treatment the product with rhodium acetate to remove diazo group. The synthesized compounds were characterized by analytical techniques viz: IR, NMR and elemental analysis. The thermal stability of the newly synthesized metal complexes have been studied.