134-85-0Relevant academic research and scientific papers
Nature-mimic fabricated polydopamine/MIL-53(Fe): Efficient visible-light responsive photocatalysts for the selective oxidation of alcohols
Meng, Shuangyan,Zeng, Wei,Wang, Mingming,Niu, Litong,Hu, Shaoping,Su, Bitao,Yang, Yaoxia,Yang, Zhiwang,Xue, Qunji
, p. 2102 - 2110 (2020)
Polydopamine/MIL-53(Fe) (PDA/MIL-53(Fe)) nanocomposite photocatalysts were synthesized with PDA (PDA = polydopamine) and MIL-53(Fe) using a nature-mimicking method. The structures, morphologies, optical properties and thermal stabilities of all the synthesized materials were characterized using a series of methods. In particular, the separation efficiency of photogenerated charge significantly increased after the incorporation of PDA into MIL-53(Fe), which resulted in an elevated photocatalytic activity of PDA/MIL-53(Fe) compared with the control groups. The PDA/MIL-53(Fe) nanocomposite could accelerate the conversion of primary or secondary alcohols into the corresponding aldehydes or ketones with a high specificity by direct hole-involving oxidation under visible-light irradiation and room temperature. The catalysts could be cycled at least three times without a significant decrease in the catalytic activity and this result showed the excellent recyclability and stability of the catalysts.
Synthesis and characterization of RuO2@ZrO2 core-shell nano particles as heterogeneous catalyst for oxidation of benzylic alcohols in different conditions
Shojaei, Abdollah Fallah,Tabatabaeian, Khalil,Hamidiyan, Massome,Hejazi, Seyyedeh Zoha
, p. 803 - 808 (2016)
In this study, new RuO2@ZrO2 core-shell nanoparticles have been produced using simple procedure and characterized by the spectroscopic methods (XRD and HR-TEM techniques). Catalytic activity of the synthesized nano powders has been i
Metal bis{(trifluoromethyl)sulfonyl}amide complexes: Highly efficient Friedel-Crafts acylation catalysts
Earle, Martyn J.,Hakala, Ullastiina,McAuley, Barry J.,Nieuwenhuyzen, Mark,Ramani, Alwar,Seddon, Kenneth R.
, p. 1368 - 1369 (2004)
A range of metal bis{(trifluoromethyl)sulfonyl}amide complexes, including many unreported ones, have been synthesised, most of which have been found to be excellent Friedel-Crafts acylation catalysts in the absence of solvent; these reactions have also been carried out in ionic liquids, which allow the catalysts to be recycled and reused.
Selective catalytic oxidation of benzylic alcohols to the corresponding carbonyl compounds with TBHP over CrS-2
Barhate,Sasidharan,Sudalai,Wakharkar
, p. 2067 - 2070 (1996)
Chromium containing medium pore molecular sieve (Si/Cr > 140) having MEL (CrS-2) topology selectively catalyzes the oxidation of various benzylic alcohols to the corresponding carbonyl compounds using 70% tert-butyl hydroperoxide (TBHP) as an oxidant.
Visible light-mediated, high-efficiency oxidation of benzyl to acetophenone catalyzed by fluorescein
Geng, Haoxing,Liu, Xin,Zhu, Qing
supporting information, (2021/12/20)
An environmentally friendly aerobic oxidation of benzyl C(sp3)-H bonds to ketones via selective oxidation catalysis was developed. Fluorescein is an efficient photocatalyst with excellent chemical selectivity. The reaction has a wide substrate scope, and a successful gram-scale experiment demonstrated its potential industrial utility.
Mechanochemical Solvent-Free Suzuki–Miyaura Cross-Coupling of Amides via Highly Chemoselective N?C Cleavage
Ma, Yangmin,Shao, Lei,Szostak, Michal,Wang, Ruihong,Zhang, Jin,Zhang, Pei
supporting information, (2022/01/04)
Although cross-coupling reactions of amides by selective N?C cleavage are one of the most powerful and burgeoning areas in organic synthesis due to the ubiquity of amide bonds, the development of mechanochemical, solid-state methods remains a major challe
Selective Activation of Unstrained C(O)-C Bond in Ketone Suzuki-Miyaura Coupling Reaction Enabled by Hydride-Transfer Strategy
Zhong, Jing,Zhou, Wuxin,Yan, Xufei,Xia, Ying,Xiang, Haifeng,Zhou, Xiangge
supporting information, p. 1372 - 1377 (2022/02/23)
A Rh(I)-catalyzed ketone Suzuki-Miyaura coupling reaction of benzylacetone with arylboronic acid is developed. Selective C(O)-C bond activation, which employs aminopyridine as a temporary directing group and ethyl vinyl ketone as a hydride acceptor, occurs on the alkyl chain containing a β-position hydrogen. A series of acetophenone products were obtained in yields up to 75%.
Palladium nanoparticles on amino-modified silica-catalyzed C–C bond formation with carbonyl insertion
Etemadi-Davan, Elham,Khalili, Dariush,Banazadeh, Ali Reza,Sadri, Ghazal,Arshad, Pourya
, p. 1891 - 1903 (2021/02/01)
Abstract: A practical and heterogeneously catalyzed Stille, homo-coupling, and Suzuki carbonylation reaction has been reported using Pd nanoparticles supported on amino-vinyl silica-functionalized magnetic carbon nanotube (CNT@Fe3O4@SiO2-Pd) for the efficient synthesis of symmetrical and unsymmetrical diaryl ketones from aryl iodides. A wide variety of symmetrical and unsymmetrical diaryl ketones were obtained in high yields under CO gas-free conditions using Mo(CO)6 as an efficient carbonyl source. Considering the atom economy of Ph3SnCl, less than an equimolar amount can be applied in Stille transformation, which is of great importance due to the toxicity of organotin derivatives. Moreover, no phosphine ligand and external reducing agent were necessary in these coupling carbonylation reactions. This heterogeneous Pd catalyst offers high activity with very low palladium leaching. Finally, the catalyst can be reused and recycled for six steps without loss in activity, exhibiting good example of sustainable methodology. Graphic abstract: [Figure not available: see fulltext.].
Rhizopus arrhizus mediated SAR studies in chemoselective biotransformation of haloketones at ambient temperature
Salokhe, Prabha R.,Salunkhe, Rajeshri S.
, (2021/09/13)
We have demonstrated a green chemistry approach using the fungus Rhizopus arrhizus for the reductive dehalogenation and synthesis of chiral secondary carbinols and halohydrins of pharmaceutical importance in mild, inexpensive, and environmental friendly process at ambient temperature. In the present study, we have succeeded in unravelling the relationship between the position of the substituent group in the structure of substrate and bioreduction activity of the fungus Rhizopus arrhizus. The asymmetric reduction of the carbonyl group to corresponding chiral halohydrin takes place with good yield and excellent enantiomeric excess (≥92%) when the substituent halogen is on the aromatic nucleus. However, novel results concerning reductive dehalogenation are obtained when halogen is incorporated in the alkyl side chain. Thus, the fungus Rhizopus arrhizus has great potential to bring chemoenzymatic biotransformation of halo ketones. Various influential processing parameters such as microbe selection, temperature, pH, etc. were also investigated to optimize the growth of biocatalyst.
A novel two-dimensional metal-organic framework as a recyclable heterogeneous catalyst for the dehydrogenative oxidation of alcohol and theN-arylation of azole compounds
Liu, Chengxin,Cui, Jin,Wang, Yufang,Zhang, Mingjie
, p. 11739 - 11744 (2021/03/31)
A novel metal-organic framework (MOF) with two-dimensional (2D) crystal structure was developed using Cu(NO3)2·3H2O and 2,2′,5,5′-tetramethoxy-[1,1′-biphenyl]-4,4′-dicarboxylic acid. Further, its structure was characterized using infrared spectroscopy, thermogravimetry, X-ray diffraction, and X-ray crystallography. The activated Cu-MOF was used to catalyze the dehydrogenative oxidation of alcohol andN-arylation of azole compounds. Furthermore, it could be easily recovered and reused.
