Reductive Amidation without an External Hydrogen Source Using Rhodium on Carbon Matrix as a Catalyst
作者:Alexey A. Tsygankov、Maria Makarova、Oleg I. Afanasyev、Alexey S. Kashin、Alexander V. Naumkin、Dmitry A. Loginov、Denis Chusov
DOI:10.1002/cctc.201901465
日期:2020.1.8
using rhodium on carbon matrix as catalyst was developed. The method does not require any external hydrogen source and carbon monoxide is used as a reducing agent. The most active rhodium catalysts were characterized by BET, TEM and XPS techniques. Unexpectedly, it was found that heterogeneous rhodium on carbon matrix works as precatalyst for homogenous active species due to leaching of rhodium to the
Ruthenium-Catalyzed Reductive Amidation without an External Hydrogen Source
作者:Niyaz Z. Yagafarov、Karim M. Muratov、Klim Biriukov、Dmitry L. Usanov、Olga Chusova、Dmitry S. Perekalin、Denis Chusov
DOI:10.1002/ejoc.201701527
日期:2018.1.31
A catalytic system for the atom‐economical Ru‐catalyzed reductive amidation of aldehydes was developed. A cyclopentadienyl ruthenium catalyst was employed in this process with loadings as low as 0.5–1 mol‐%, and carbon monoxide was used as the deoxygenative agent. A number amides and aromatic aldehydes were able to successfully afford the corresponding secondary amide in yields of 79–84 %.