6850-35-7Relevant articles and documents
Synthesis of trans-3-substituted cyclohexylamines via Br?nsted acid catalyzed and substrate-mediated triple organocatalytic cascade reaction
Zhou, Jian,List, Benjamin
, p. 2037 - 2040 (2007)
We report a new organocatalytic cascade reaction. A combination of the amine substrate with a catalytic amount of a Br?nsted acid merges enamine and iminium catalysis with Br?nsted acid catalysis in a new organocatalytic cascade reaction. We found that the aniline substrate itself in combination with a catalytic amount of PTSA·H2O can function as an aminocatalyst accomplishing an aldol condensation-conjugate reduction cascade, which terminates in a Br?nsted acid catalyzed reductive amination incorporating the amine substrate into the final product. This transformation furnishes trans-3-substituted cyclohexyl amines in good yields and good diastereoselectivities. Georg Thieme Verlag Stuttgart.
Amino-Modified Silica-Supported Copper-Palladium Alloy. Synthesis and Use in Selective Hydrogenation of Disubstituted Nitroarenes in a Flow Micro Reactor
Nurmukhametova,Belov,Sultanova,Vorob’ev,Osin, Yu. N.,Burilov,Antipin
, p. 1 - 6 (2019/04/27)
A copper-palladium catalyst supported on amino-modified silica has been synthesized by chemical reduction. It has been found that submicron particles of a copper-palladium alloy are formed on the silica surface. Unlike commercially available palladium catalysts (Pd/Al2O3, Pd/C, Pd/BaSO4), the synthesized copper-palladium catalyst makes it possible to selectively reduce the nitro group in 3-nitrobenzaldehyde and 1-chloro-4-nitrobenzene.
CATALYST COMPOUNDS
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Paragraph 0314; 0322, (2015/03/28)
The present invention relates to an iridium-based catalyst compound for hydrogenating reducible moieties, especially imines and iminiums, the catalyst compounds being defined by the formulas: where ring B is either itself polycyclic, or ring B together with R is polycyclic. The catalysts of the invention are particularly effective in reductive amination procedures 10 which involve the in situ generation of the imine or iminium under reductive hydrogenative conditions.