1370531-82-0Relevant academic research and scientific papers
CuI nanoparticles as recyclable heterogeneous catalysts for C-N bond formation reactions
Kumar, Manoranjan,Bhatt, Vinod,Nayal, Onkar S.,Sharma, Sushila,Kumar, Vishal,Thakur, Maheshwar S.,Kumar, Neeraj,Bal, Rajaram,Singh, Bikram,Sharma, Upendra
, p. 2857 - 2864 (2017/07/22)
Herein, copper iodide nanoparticles (NPs) are reported for the reductive amination of carbonyl compounds for the first time. The generated NPs were characterized by TEM, EDX, XRD and XPS analyses. The XRD patterns, XPS, and EDX analysis confirmed that the resulting NPs were CuI instead of Cu. The TEM images of CuI exhibited the size of monodispersed spherical NPs in the range of 4 ± 2 nm. These generated NPs can be used as versatile heterogeneous catalysts for important organic transformations. As a proof of concept, CuI NPs were successfully applied as heterogeneous catalysts for the synthesis of secondary amines, amides and triazoles. CuI NPs can be easily recovered and recycled up to six times.
General and selective reductive amination of carbonyl compounds using a core-shell structured Co3O4/NGr@C catalyst
Stemmler, Tobias,Westerhaus, Felix A.,Surkus, Annette-Enrica,Pohl, Marga-Martina,Junge, Kathrin,Beller, Matthias
, p. 4535 - 4540 (2014/12/10)
The application of heterogenized non-noble metal-based catalysts in selective catalytic hydrogenation processes is still challenging. In this respect, the preparation of a well-defined cobalt-based catalyst was investigated by immobilization of the corresponding cobalt(ii)-phenanthroline-chelate on Vulcan XC72R carbon powder. The formed core-shell structured cobalt/cobalt oxide nanocomposites are encapsulated by nitrogen-enriched graphene layers. This promising cheap heterogeneous catalyst allows for an efficient domino reductive amination of carbonyl compounds with nitroarenes. This journal is
Iron-catalyzed synthesis of secondary amines: On the way to green reductive aminations
Stemmler, Tobias,Surkus, Annette-Enrika,Pohl, Marga-Martina,Junge, Kathrin,Beller, Matthias
, p. 3012 - 3016 (2015/09/28)
Amines represent important intermediates in chemical and biological processes. Herein, we describe the use of a nanostructured iron-based catalyst for the tandem reductive amination between nitroarenes and aldehydes using hydrogen as reductant. The nanostructured iron-catalyst is prepared by immobilization of an iron-phenanthroline complex onto a commercially available carbon support. In the reaction sequence a primary amine is formed in situ from the corresponding nitro compound. Reversible condensation with aldehydes forms the respective imines, which are finally reduced to the desired secondary amine. This synthesis of secondary amines is atom-economical and environmentally attractive using cheap and readily available organic compounds as starting materials.
Cobalt(II) phthalocyanine-catalyzed highly chemoselective reductive amination of carbonyl compounds in a green solvent
Kumar, Vishal,Sharma, Upendra,Verma, Praveen K.,Kumar, Neeraj,Singh, Bikram
supporting information; experimental part, p. 870 - 878 (2012/05/04)
Cobalt phthalocyanine has been employed for the highly chemoselective reductive amination of aldehydes and ketones in ethanol as a green solvent. A large range of functional groups such as nitro, acid, amide, ester, nitrile, halogen, lactone, methoxy, hydroxy, alkene, N-benzyl, O-benzyl and heterocyclic rings were well tolerated under the present reaction conditions. Copyright
