Dual Palladium(II)/Tertiary Amine Catalysis for Asymmetric Regioselective Rearrangements of Allylic Carbamates
作者:Johannes Moritz Bauer、Wolfgang Frey、René Peters
DOI:10.1002/chem.201600138
日期:2016.4.11
access to enantiopure allylicamines as valuable precursors towards chiral β‐ and γ‐aminoalcohols as well as α‐ and β‐aminoacids is desirable for industrial purposes. In this article an enantioselective method is described that transforms achiral allylic alcohols and N‐tosylisocyanate in a single step into highly enantioenriched N‐tosyl protected allylicamines via an allylic carbamate intermediate
Synthesis of Azaheterocyclic Vinylphosphonates by Ring-Closing Metathesis
作者:Cécile Garzon、Mireille Attolini、Michel Maffei
DOI:10.1002/ejoc.201300375
日期:2013.6
The title compounds were synthesized by ruthenium-catalyzed ring-closingmetathesis of N-tosyl-N-(ω-alkenyl)aminomethylvinyl phosphonates, which were obtained from N-(ω-alkenyl)-N-tosylamides. These compounds, in turn, were prepared from unsaturated alcohols through the Mitsunobu reaction. This methodology gives access to five- and six-membered ring compounds. Additionally, chiral phosphonates can