Transfer hydrogenation of nitroarenes into anilines by palladium nanoparticles via dehydrogenation of dimethylamine borane complex

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86529-86535 ◽  
Author(s):  
Nilesh M. Patil ◽  
Manohar A. Bhosale ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Reducing Agent ◽  
Water Soluble ◽  
Transfer Hydrogenation ◽  
Dimethylamine Borane

Reduction of nitroarenes to corresponding amines ​via dehydrogenation of dimethylamine borane using Pd NPs as a catalyst. The developed catalytic system uses dimethylamine borane as a reducing agent which is highly stable, water soluble and non-toxic.

Immobilized ruthenium metal-containing ionic liquid-catalyzed dehydrogenation of dimethylamine borane complex for the reduction of olefins and nitroarenes

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52347-52352 ◽  
Author(s):  
Nilesh M. Patil ◽  
Takehiko Sasaki ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Ionic Liquid ◽  
Reducing Agent ◽  
Transfer Hydrogenation ◽  
Dimethylamine Borane

An efficient immobilized ruthenium metal containing ionic liquid (ImmRu-IL) catalyst has been developed for the transfer hydrogenation of olefins and nitroarenes. This methodology uses eco-friendly dimethylamine borane as a reducing agent.

An efficient ligand free chemoselective transfer hydrogenation of olefinic bonds by palladium nanoparticles in an aqueous reaction medium

RSC Advances ◽  
2014 ◽  
Vol 4 (62) ◽  
pp. 32834-32839 ◽  
Author(s):  
Dattatraya B. Bagal ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Reaction Medium ◽  
Transfer Hydrogenation ◽  
Effective Catalyst ◽  
Ligand Free ◽  
Unsaturated Carbonyls

An efficient ligand free catalytic system was developed for chemoselective 1,4-reduction of various α,β-unsaturated carbonyls by palladium nanoparticles in aqueous reaction medium with excellent chemoselectivity and effective catalyst recyclability.

Dual functionalized task specific ionic liquid promoted in situ generation of palladium nanoparticles in water: synergic catalytic system for Suzuki–Miyaura cross coupling

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 79061-79069 ◽  
Author(s):  
Jayavant D. Patil ◽  
Suyog N. Korade ◽  
Supriya A. Patil ◽  
Dipak S. Gaikwad ◽  
Dattaprasad M. Pore
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Cross Coupling ◽  
Reducing Agent ◽  
High Catalytic Activity ◽  
In Situ Generation ◽  
Task Specific Ionic Liquid

A new task specific ionic liquid with hydroxyl and prolinate functionalities acts as a reducing agent and serves as a ligand and stabilizer for in situ formed palladium nanoparticles. This system displays high catalytic activity for Suzuki–Miyaura cross-coupling in water.

Ru-Tethered (R,R)-TsDPEN with DMAB as an efficient catalytic system for high enantioselective one-pot synthesis of chiral β-aminol via asymmetric transfer hydrogenation

2021 ◽  
Vol 45 (12) ◽  
pp. 5357-5362
Author(s):  
Ashish A. Mishra ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Catalytic System ◽  
Optically Active ◽  
Transfer Hydrogenation ◽  
Selective Synthesis ◽  
Asymmetric Transfer Hydrogenation ◽  
One Pot ◽  
Chiral Catalyst ◽  
One Pot Synthesis ◽  
Dimethylamine Borane

This work reflects Ru-tethered-TsDPEN as an active chiral catalyst for one pot selective synthesis of optically active α-substituted alcohols and its derivatives from α-bromo ketones in the presence of dimethylamine borane (DMAB) as the hydrogen source.

scholarly journals Iridium Complex Catalyzed Hydrogen Production from Glucose and Various Monosaccharides

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 891
Author(s):  
Ken-ichi Fujita ◽  
Takayoshi Inoue ◽  
Toshiki Tanaka ◽  
Jaeyoung Jeong ◽  
Shohichi Furukawa ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Catalytic System ◽  
Catalytic Reaction ◽  
Hydrogen Gas ◽  
Water Soluble ◽  
Starting Material ◽  
Iridium Complex ◽  
Production Of Hydrogen ◽  
Bipyridine Ligand

A new catalytic system has been developed for hydrogen production from various monosaccharides, mainly glucose, as a starting material under reflux conditions in water in the presence of a water-soluble dicationic iridium complex bearing a functional bipyridine ligand. For example, the reaction of D-glucose in water under reflux for 20 h in the presence of [Cp*Ir(6,6′-dihydroxy-2,2′-bipyridine)(H2O)][OTf]2 (1.0 mol %) (Cp*: pentamethylcyclopentadienyl, OTf: trifluoromethanesulfonate) resulted in the production of hydrogen gas in 95% yield. In the present catalytic reaction, it was experimentally suggested that dehydrogenation of the alcoholic moiety at 1-position of glucose proceeded.

scholarly journals Bis-NHC–Ag/Pd(OAc)2 Catalytic System Catalyzed Transfer Hydrogenation Reaction

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 8
Author(s):  
Hui-Ju Chen ◽  
Chien-Cheng Chiu ◽  
Tsui Wang ◽  
Dong-Sheng Lee ◽  
Ta-Jung Lu
Keyword(s):  
Functional Groups ◽  
Catalytic System ◽  
High Efficiency ◽  
Aqueous Media ◽  
Hydrogenation Reaction ◽  
Transfer Hydrogenation ◽  
Terminal Alkynes ◽  
Wide Range ◽  
Transfer Hydrogenation Reaction

The bis-NHC–Ag/Pd(OAc)2 catalytic system (NHC = N-heterocyclic carbene), a combination of bis-NHC–Ag complex and Pd(OAc)2, was found to be a smart catalyst in the Pd-catalyzed transfer hydrogenation of various functionalized arenes and internal/terminal alkynes. The catalytic system demonstrated high efficiency for the reduction of a wide range of various functional groups such as carbonyls, alkynes, olefins, and nitro groups in good to excellent yields and high chemoselectivity for the reduction of functional groups. In addition, the protocol was successfully exploited to stereoselectivity for the transformation of alkynes to alkenes in aqueous media under air. This methodology successfully provided an alternative useful protocol for reducing various functional groups and a simple operational protocol for transfer hydrogenation.

scholarly journals Polyethyleneimine-Oleic Acid Micelles-Stabilized Palladium Nanoparticles as Highly Efficient Catalyst to Treat Pollutants with Enhanced Performance

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1890
Author(s):  
Xiang Lai ◽  
Xuan Zhang ◽  
Shukai Li ◽  
Jie Zhang ◽  
Weifeng Lin ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Palladium Nanoparticles ◽  
Human Life ◽  
Catalytic Performance ◽  
Water Soluble ◽  
Noble Metal Nanoparticles ◽  
Hydrodynamic Diameter ◽  
Efficient Catalyst

Water soluble organic molecular pollution endangers human life and health. It becomes necessary to develop highly stable noble metal nanoparticles without aggregation in solution to improve their catalytic performance in treating pollution. Polyethyleneimine (PEI)-based stable micelles have the potential to stabilize noble metal nanoparticles due to the positive charge of PEI. In this study, we synthesized the amphiphilic PEI-oleic acid molecule by acylation reaction. Amphiphilic PEI-oleic acid assembled into stable PEI-oleic acid micelles with a hydrodynamic diameter of about 196 nm and a zeta potential of about 34 mV. The PEI-oleic acid micelles-stabilized palladium nanoparticles (PO-PdNPsn) were prepared by the reduction of sodium tetrachloropalladate using NaBH4 and the palladium nanoparticles (PdNPs) were anchored in the hydrophilic layer of the micelles. The prepared PO-PdNPsn had a small size for PdNPs and good stability in solution. Noteworthily, PO-PdNPs150 had the highest catalytic activity in reducing 4-nitrophenol (4-NP) (Knor = 18.53 s−1mM−1) and oxidizing morin (Knor = 143.57 s−1M−1) in aqueous solution than other previous catalysts. The enhanced property was attributed to the improving the stability of PdNPs by PEI-oleic acid micelles. The method described in this report has great potential to prepare many kinds of stable noble metal nanoparticles for treating aqueous pollution.

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