Palladium nanoparticles, simply and briefly generated in commercial and cheap onium salts using supercritical carbon dioxide, have been found to be an effective catalytic system for additive free N-alkylation reaction using alcohols via cascade oxidation/condensation/reduction steps.
A nanoscale iron catalyst for heterogeneous direct <i>N</i>- and <i>C</i>-alkylations of anilines and ketones using alcohols under hydrogen autotransfer conditions
作者:Madhu Nallagangula、Chandragiri Sujatha、Venugopal T. Bhat、Kayambu Namitharan
DOI:10.1039/c9cc04120f
日期:——
report a commercially available nanoscale Fe catalyst for heterogeneous direct N- and C-alkylation reactions of anilines and methyl ketones with alcohols. A hydrogen autotransfer mechanism has been found to operate in these reactions by deuterium labelling studies. In addition, dehydrogenative quinoline synthesis has been demonstrated from amino benzyl alcohols and acetophenones.
A Highly Active PN<sup>3</sup> Manganese Pincer Complex Performing N-Alkylation of Amines under Mild Conditions
作者:Leonard Homberg、Alexander Roller、Kai C. Hultzsch
DOI:10.1021/acs.orglett.9b00832
日期:2019.5.3
on a nonsymmetric PN3-ligand scaffold for the N-alkylation of amines with alcohols utilizing the borrowing hydrogen methodology is reported. A broad range of anilines and the more challenging aliphatic amines were alkylated with primary and secondary alcohols. Moreover, the combination of low catalyst loadings and mild reaction conditions provides high efficiency for this atom-economic transformation
Convenient and Reusable Manganese‐Based Nanocatalyst for Amination of Alcohols
作者:Murugan Subaramanian、Palmurukan M. Ramar、Ganesan Sivakumar、Ravishankar G. Kadam、Martin Petr、Radek Zboril、Manoj B. Gawande、Ekambaram Balaraman
DOI:10.1002/cctc.202100635
日期:2021.10.19
Nanocatalytic Amination: Herein, a reusable heterogeneous N-doped graphene-based manganesenanocatalyst (Mn@NrGO) for selective N-alkylation of amines with alcohols is described. The heterogeneous nature of the catalyst made it easy to separate for long-term performance, and the recycling study revealed that the catalyst was robust and retained its activity after several recycling experiments.
thiazoline‐iridium (III) complexes (4–7) derived from cysteine were prepared and fully characterized by conventional methods. The molecular structure of complex 5 was also determined by single‐crystal X‐ray diffraction. These complexes were evaluated as catalysts for hydrogen‐borrowing reactions of amines with alcohols. In particular, complex 5 showed the best activity as catalyst. Various amines have