A single-component, air-stable nickel precatalyst can catalyze the isomerization of allylamides for the synthesis of enamides. The scope of the reaction encompasses various substituted allylamides and allylcarbamates as well as homoallylamides. The reaction can be performed on a multigram-scale without specialized glove-box equipment or Schlenk techniques.
A highly modular, diastereoselective one-pot-synthesis of 1,3-diamines with three contiguous stereogenic centers is reported. Our method provides a fast and efficient access to 1,2-anti-2,3-anti-1,3-diamines from three readily available building blocks. This Bi(OTf)3-catalyzed reaction is insensitive to air and moisture and can be performed on a multigram scale.
Easy access to enamides: a mild nickel-catalysed alkene isomerization of allylamides
作者:Lu Wang、Chao Liu、Ruopeng Bai、Yani Pan、Aiwen Lei
DOI:10.1039/c3cc43875a
日期:——
The first Ni-catalysed alkene isomerization of allylamides for the synthesis of enamides was demonstrated. Various substituted N-allylamides were found to be suitable substrates for this isomerization. Isotopic labelling experiments showed that it is an intramolecular hydrogen transfer process.