Journal ArticleDOI
A Review of the Selective Catalytic Reduction of Aromatic Nitro Compounds into Aromatic Amines, Isocyanates, Carbamates, and Ureas Using CO.
Ahmed M. Tafesh,Jens Weiguny +1 more
TLDR
The use of CO as a reductant had been in the past confined to few reactions, but its use in organic synthesis, especially in the reductive carbonylation of nitro aromatics and the oxidative carbonylations of aromatic amines, has increased dramatically as mentioned in this paper.Abstract:
Although the use of CO as a reductant had been in the past confined to few reactions, its use in organic synthesis, especially in the reductive carbonylation of nitro aromatics and the oxidative carbonylation of aromatic amines, has increased dramatically. Since the discovery of CO-induced reduction of nitro groups, there has been a wide spread increase of interest in the application and mechanistic understanding of this reaction. In a major review published in 1988 it was noted, that in practice no studies of the mechanism of N-carbonylation of aromatic nitro compounds with alcohols leading to carbamates have been carried out. This review clearly shows a major change since that publication. Indeed, metal-catalyzed reductive carbonylation of nitro aromatics using CO as reducing agent has been in the past 10 years the subject of intense investigation both in academia and in the chemical industry. Several articles and reviews have covered the subject up to the late 1980s. The authors will concentrate on more recent literature, but sometimes older data will be used to establish an understanding of these reactions. 127 refs.read more
Citations
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Biofabrication, characterization, and possible bio-reduction mechanism of platinum nanoparticles mediated by agro-industrial waste and their catalytic activity
TL;DR: In this paper, the authors showed biofabrication of platinum nanoparticles (Pt-NPs) using agro-industrial waste Punica granatum's peel extract.
Journal ArticleDOI
Transition-Metal-Free Lactonization of sp2 C–H Bonds with CO2
Zhen Zhang,Tao Ju,Meng Miao,Jie-Lian Han,Yi-Han Zhang,Xing-Yong Zhu,Jian-Heng Ye,Da-Gang Yu,Yong-Gang Zhi +8 more
TL;DR: The transition-metal-free lactonization of heteroaryl and alkenyl C-H bonds with carbon dioxide is reported to synthesize important coumarin derivatives in moderate to excellent yields.
Journal ArticleDOI
Nitrosation of aryl and heteroaryltrifluoroborates with nitrosonium tetrafluoroborate.
TL;DR: A mild, selective, and convenient method for the ipso-nitrosation of organotrifluoroborates using nitrosonium tetrafluorOBorate (NOBF(4), which proved to be tolerant of a broad range of functional groups.
Journal ArticleDOI
Anchoring nickel nanoparticles on three-dimensionally macro-/mesoporous titanium dioxide with a carbon layer from polydopamine using polymethylmethacrylate microspheres as sacrificial templates
TL;DR: In this paper, a 3D macro-mesoporous TiO2@C-Ni composites were successfully fabricated using polymethylmethacrylate (PMMA) as a sacrificial template.
Journal ArticleDOI
First gold(I) complex-catalyzed oxidative carbonylation of amines for the syntheses of carbamates
Feng Shi,Youquan Deng +1 more
TL;DR: In this article, at 200 °C and 5 MPa of initial total pressure, the synthesis of amines by Au(I) complexes as catalysts was conducted with excellent conversion and selectivity.
References
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Journal ArticleDOI
Water-Soluble Ligands, Metal Complexes, and Catalysts: Synergism of Homogeneous and Heterogeneous Catalysis
TL;DR: Water-soluble catalysts as mentioned in this paper combine the advantages of homogeneous and heterogeneous catalysis: simple and complete separation of the product from the catalyst, high activity, and high selectivity.
Journal ArticleDOI
Transformations of Chloroarenes, Catalyzed by Transition-Metal Complexes
Vladimir V. Grushin,Howard Alper +1 more
Journal ArticleDOI
Palladium(II) catalysts for living alternating copolymerization of olefins and carbon monoxide
TL;DR: In this article, the synthesis of well-defined Pd(II) catalysts that operate in aprotic solvents to yield living alternating copolymers of olefins and CO was reported.
Journal ArticleDOI
Palladium Complex-Catalyzed Reductive N-Heterocyclization of Nitroarenes: Novel Synthesis of Indole and 2H-Indazole Derivatives
TL;DR: The dichlorobis(triphenylphosphine)palladium (PdCl 2 (PPh 3 ) 1 )-tin(II) chloride (SnCl 2 ) system showed high catalytic activity for the reductive N-heterocyclization of various 2-nitrostyrene and N-(2-nitrobenzylidene)amine derivatives when employed at 100 o C for 16 h under 20 kg cm -2 of initial carbon monoxide pressure, to give the corresponding indole and 2H-indazole derivatives in
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