A5072229794- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Gastrointestinal Bleeding Diagnosis and Treatment
- Gastric Cancer Management and Outcomes
- Gastrointestinal disorders and treatments
- Catalytic Cross-Coupling Reactions
- Catalysis and Hydrodesulfurization Studies
- Asymmetric Hydrogenation and Catalysis
- Catalysis for Biomass Conversion
- Gastrointestinal Tumor Research and Treatment
- Lignin and Wood Chemistry
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Catalytic Processes in Materials Science
- Esophageal and GI Pathology
- Chemical Synthesis and Analysis
- Asymmetric Synthesis and Catalysis
- Catalytic C–H Functionalization Methods
- Energy Harvesting in Wireless Networks
- Wireless Power Transfer Systems
- Metastasis and carcinoma case studies
- Organophosphorus compounds synthesis
- Colorectal Cancer Screening and Detection
- Synthetic Organic Chemistry Methods
- Gastroesophageal reflux and treatments
- Nanomaterials for catalytic reactions
Ehime University
2014-2025
Ruhr University Bochum
2022
University of Aveiro
2022
Massachusetts Institute of Technology
2022
University of Georgia
2022
University of North Carolina at Chapel Hill
2022
Soochow University
2022
Universidad Complutense de Madrid
2022
Kanazawa University
2022
Kyushu Institute of Technology
2022
Conversion of lignocellulose into renewable chemicals and fuels has received great attention for building up sustainable societies. However, the utilisation in chemical industry largely been limited to paper manufacturing because complicated structure persistent property lignocellulose. Heterogeneous catalysis potential selectively convert lignocellulosic biomass various useful chemicals, this methodology rapidly progressed last several years. In perspective article, we outline our recent...
Carbon-supported Pt catalysts are highly active and reusable for the aqueous-phase hydrodeoxygenation of phenols as lignin models without adding any acids. It is suggested that Pt/carbon facilitates hydrogenation hydrogenolysis resulting cyclohexanols.
ADVERTISEMENT RETURN TO ISSUEPREVLetterNEXTA Bowl-Shaped Phosphine as a Ligand in Palladium-Catalyzed Suzuki−Miyaura Coupling of Aryl Chlorides: Effect the Depth BowlHidetoshi Ohta, Makoto Tokunaga, Yasushi Obora, Tomohiro Iwai, Tetsuo Iwasawa, Tetsuaki Fujihara, and TsujiView Author Information Department Energy Hydrocarbon Chemistry, Graduate School Engineering, Kyoto University, CREST, Japan Science Technology Agency (JST), 615-8510, Japan, Catalysis Research Center Division Science,...
Peripheral vision: A second generation dendritic phosphane, with tetraethylene glycol (TEG) moieties at the periphery, has been designed and prepared (see structure). It is particularly effective as a ligand for title transformation when using aryl chloride substrates. To realize high catalytic activity, TEG groups must be connected to phosphane framework. Supporting information this article available on WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z802683_s.pdf or from author....
An in-water dehydrative alkylation with a novel heterobimetallic polymeric catalyst is described. Thus, boron-iridium was prepared by ionic convolution of poly(catechol borate) and an iridium complex. The ammonia amines alcohols, alkylating agents, performed 1 mol % Ir the heterogeneous in water without use organic solvents under aerobic conditions to give corresponding alkylated amines.
A practical synthesis of a variety λ5-phosphinines, which show distinct fluorescence both in solution and solid state, is described. Both C4-selective electrophilic substitutions the following conversions realized an easy preparation wide range derivatives having several substituents for electronic modification, provides potential fine-tuning photophysical properties.
The hydrodeoxygenation of various phenols to form cyclohexanes under mild conditions (ambient H<sub>2</sub> pressure and 110 °C) was developed by using a Pt/H-ZSM-5 catalyst octane as the solvent.
Although λ
A series of novel imidazolium salts bearing hydrophilic tetraethylene glycol (TEG) and/or hydrophobic long-chain alkyl (n-C12) functionalities, which are precursors for desired N-heterocyclic carbene (NHC) ligands, were synthesized and characterized. Rh(I)-NHC complexes prepared in good yields by the silver transfer method with NHC-Ag species derived from salts. The molecular structure complex having n-C12 chains has been determined a single-crystal X-ray diffraction study is found to...
The aim of this study was to investigate the effect a transjugular intrahepatic portosystemic shunt (TIPS) on portal hypertensive gastropathy (PHG) and gastric hemodynamics.A total 16 patients with cirrhosis were prospectively studied. Of these, 12 underwent TIPS for esophageal varices four refractory ascites. Gastric mucosal blood flow (GMBF) assessed by laser Doppler flowmeter, (TBF) in submucosa mucosa near-infrared endoscopy. Portal venous pressure obtained transducer during procedure....
λ5‐Phosphinines with a heteroatom functionality at the C‐4 position were synthesized by several newly developed procedures. S‐, P‐, N‐, and B‐substituted phosphinines exhibit highly effective emission variable tunable wavelength according to substituent electronic density. Photophysical properties demonstrative examples of qualitative fluorescent detection also reported.
A dehydrative alkylation with three kinds of Ir/B heterobimetallic polymeric catalysts in water is reported. The were readily prepared by ionic convolution a poly(catechol borate) and iridium complexes. N-alkylation ammonia amines alcohols, as alkylating agents, was carried out heterogeneous catalyst (1 mol% Ir) at 100 °C without the use organic solvents under aerobic aqueous conditions to afford corresponding alkylated high yield.
Practical and versatile syntheses of tertiary phosphine derivatives have been achieved by palladium-catalyzed deformylative P-C cross-coupling reactions hydroxymethylphosphine derivatives. Sequential couplings orthogonally protected precursors provide a simple practical route toward variety having aryl substituents in any combination.
Quatermetallic alloy nanoparticles of Ni/Ru/Pt/Au were prepared which cooperatively promoted the catalytic transfer hydrogenation non-activated alkenes with 2-propanol.
Einflussreiche Endgruppen: Ein dendritisches Phosphan der zweiten Generation mit Tetraethylenglycol(TEG)-Endgruppen (siehe Struktur) ist besonders effektiv als Ligand für die Titelreaktion Arylchloriden Substraten. Um eine hohe katalytische Aktivität zu erreichen, müssen TEG-Gruppen dem Phosphangerüst verbunden sein. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2008/z802683_s.pdf or from author. Please note: The publisher not...
N-Heterocyclic carbenes bearing poly(ethylene glycol) chains of different lengths have been employed as ligands in palladium-catalyzed coupling reactions aryl chlorides.
This report describes a strategy to create highly electrophilic dirhodium catalysts. The electrophilicity of lantern-type complexes is generally decreased by the coordination ligand axial site, which often causes reduction in catalytic activity. We designed and synthesized series cationic bridged 2-diarylphosphinopyridines having bulky 2,4,6-triisopropylphenyl (Tip) group that can prevent attack external molecules closest site. Theoretical calculations indicated Tip weakly interacts with...
Abstract The selective and efficient removal of oxygenated groups from lignin‐derived phenols is a critical challenge to utilize lignin as source for renewable aromatic chemicals. This report describes how surface modification zeolite‐supported Pt catalyst using ionic liquids (ILs) remarkably increases selectivity the hydrodeoxygenation (HDO) into arenes under mild reaction conditions atmospheric pressure H 2 . Unmodified Pt/H‐ZSM‐5 converts aliphatic species major products along with slight...
The development of a versatile process for phosphine synthesis has attracted considerable interest because organophosphines are indispensable organic synthesis. Previously, we developed Pd‐catalyzed P–C coupling reaction hydroxymethylphosphine sulfide derivatives with various aryl iodides as method preparing variety triarylphosphine derivatives. However, the catalyst system did not activate bromides and triflates, which more readily available than iodides. Herein, report new effective...