N-(Diethoxyphosphoryl)-O-benzylhydroxylamine—a convenient substrate for the synthesis of N-substituted O-benzylhydroxylamines
作者:Katarzyna Błażewska、Tadeusz Gajda
DOI:10.1016/j.tet.2003.10.056
日期:2003.12
Easily available N-(diethoxyphosphoryl)-O-benzylhydroxylamine was shown to be convenient, orthogonally protected substrate for regioselective N-alkylation by means of diverse halides under basic conditions (sodium hydride/tetrabutylammonium bromide). An efficient procedure for dephosphorylation of N-substituted N-(diethoxyphosphoryl)-O-benzylhydroxylamine to provide N-substituted O-benzylhydroxylamines
Diastereoselective synthesis of a hydroxamate containing bicyclo-[3.2.0] β-lactam aminal via ruthenium alkene isomerization and Pd(II)-catalyzed oxidative amidation
作者:Maria O. Jobbins、Mark W. Majewski、Allen G. Oliver、Marvin J. Miller
DOI:10.1016/j.tetlet.2014.12.072
日期:2015.6
With antibiotic resistance on the rise, the need for new medicinal scaffolds is needed. The synthesis of an aminal bicyclic beta-lactam core is described. The key synthetic step is Pd(II)-catalyzed oxidative amidation. The product is a single diastereomer, confirmed by X-ray crystallography. (C) 2014 Elsevier Ltd. All rights reserved.