Rearrangement of aldoximes to amides in water under air atmosphere catalyzed by water-soluble iridium complex [Cp*Ir(H2O)3][OTf]2

2014 ◽  
Vol 4 (4) ◽  
pp. 988-996 ◽  
Author(s):  
Chunlou Sun ◽  
Panpan Qu ◽  
Feng Li
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Air Atmosphere ◽  
Ligand Free ◽  
Aliphatic Group

R = aryl or aliphatic group phosphorous ligand-free low catalytic loading under air atmosphere up to 93% yield; 37 examples.

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 Ligand-Free (Z)-Selective Transfer Semihydrogenation of Alkynes Catalyzed by in situ Generated Oxidizable Copper Nanoparticles

2021 ◽  
Author(s):  
Rafał Kusy ◽  
Karol Grela
Keyword(s):  
Suzuki Reaction ◽  
Ammonia Borane ◽  
Water Soluble ◽  
Selective Transfer ◽  
One Pot ◽  
Ammonia Complex ◽  
Ligand Free ◽  
Simple Phase ◽  
Operational Simplicity

Herein, we present (<i>Z</i>)-selective transfer semihydrogenation of alkynes based on in situ generated CuNPs in the presence of hydrogen donors, such as ammonia-borane and a protic solvent. This environmentally-friendly method is characterized by operational simplicity combined with high stereo- and chemoselectivity and functional group compatibility. Auto-oxidation of CuNPs after the semihydrogenation reaction is completed results in the formation of water-soluble ammonia complex, so that the catalyst may be reused several times by simple phase-separation with no need of any special regeneration process. Formed NH<sub>4</sub>B(OR)<sub>4</sub> can be easily transformed back to ammonia-borane or to boric acid. In addition, one-pot tandem sequence involving Suzuki reaction followed by semihydrogenation was presented.<br>

Reprocessing Silicon Carbide Inert Matrix Fuel by Molten Salt Corrosion

2009 ◽  
Vol 1215 ◽  
Author(s):  
Ting Cheng ◽  
Ronald Baney ◽  
James Tulenko
Keyword(s):  
Silicon Carbide ◽  
Matrix Material ◽  
Water Soluble ◽  
Inert Matrix Fuel ◽  
Inert Matrix ◽  
Molten Carbonates ◽  
Air Atmosphere ◽  
Salt Corrosion ◽  
Bulk Reaction ◽  
Inert Matrix Fuels

AbstractSilicon carbide is one of the prime matrix material candidates for inert matrix fuels (IMF) which are being designed to reduce plutonium and long half-life actinide inventories through transmutation. Since complete transmutation is impractical in a single in-core run, reprocessing the inert matrix fuels becomes necessary. The current reprocessing techniques of many inert matrix materials involve dissolution of spent fuels in acidic aqueous solutions. However, SiC cannot be dissolved by that process. Thus, new reprocessing techniques are required.This paper discusses a possible way for separating transuranic (actinide) species from a bulk silicon carbide (SiC) matrix utilizing molten carbonates. Bulk reaction-bonded SiC and SiC powder (1 μm) were corroded at high temperatures (above 850 °C) in molten carbonates (K2CO3 and Na2CO3) in an air atmosphere to form water soluble silicates. Separation of Ceria (used as a surrogate for the plutonium fissile fuel) was achieved by dissolving the silicates in boiling water and leaving behind the solid ceria (CeO2).

Aliphatic Group-Tethered Iridium Complex as a Theranostic Agent against Malignant Melanoma Metastasis

2020 ◽  
Vol 3 (4) ◽  
pp. 2017-2027 ◽  
Author(s):  
Ke-Jia Wu ◽  
Shih-Hsin Ho ◽  
Jia-Yi Dong ◽  
Ling Fu ◽  
Shuang-Peng Wang ◽  
...  
Keyword(s):  
Malignant Melanoma ◽  
Iridium Complex ◽  
Melanoma Metastasis ◽  
Theranostic Agent ◽  
Aliphatic Group

The N-alkylation of sulfonamides with alcohols in water catalyzed by a water-soluble metal–ligand bifunctional iridium complex [Cp*Ir(biimH2)(H2O)][OTf]2

2019 ◽  
Vol 43 (27) ◽  
pp. 10755-10762 ◽  
Author(s):  
Yao Ai ◽  
Pengcheng Liu ◽  
Ran Liang ◽  
Yan Liu ◽  
Feng Li
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Effective Catalyst ◽  
Bridging Ligand ◽  
Highly Effective ◽  
Metal Ligand

A water-soluble dinuclear Cp*Ir complex bearing 4,4′,6,6′-tetrahydroxy-2,2′-bipyrimidine as a bridging ligand was found to be a highly effective catalyst for the N-alkylation of ketones with alcohols in water.

Acceptorless dehydrogenative condensation of o-aminobenzamides with aldehydes to quinazolinones in water catalyzed by a water-soluble iridium complex [Cp*Ir(H2O)3][OTf]2

2015 ◽  
Vol 2 (12) ◽  
pp. 1589-1597 ◽  
Author(s):  
Feng Li ◽  
Lei Lu ◽  
Juan Ma
Keyword(s):  
Water Soluble ◽  
Environmentally Benign ◽  
Iridium Complex

A general, efficient and environmentally benign method for the synthesis of quinazolinones via acceptorless dehydrogenative condensation of o-aminobenzamides with aldehydes in water has been accomplished.

scholarly journals Recyclable Cu(i)/melanin dots for cycloaddition, bioconjugation and cell labelling

2016 ◽  
Vol 7 (9) ◽  
pp. 5888-5892 ◽  
Author(s):  
Yao Sun ◽  
Suhyun Hong ◽  
Xiaowei Ma ◽  
Kai Cheng ◽  
Jing Wang ◽  
...  
Keyword(s):  
Free Water ◽  
Water Soluble ◽  
Cell Labelling ◽  
Ligand Free

We successfully transferred melanin into a novel catalytic platform. Ligand-free, water-soluble, recyclable and biocompatible Cu(i)-loaded melanin dots [Cu(i)/M-dots] was easily prepared and demonstrate excellent properties for classic CuAAC, bioconjugation and cell labelling.

A water-soluble iridium complex: Highly sensitive to bisulfite and sequential recognition to Cu 2+ ions

2017 ◽  
Vol 78 ◽  
pp. 9-12 ◽  
Author(s):  
Qing Li ◽  
Chaoyi Xie ◽  
Rongqing Zeng ◽  
Xianghong Li ◽  
Dingguo Tang
Keyword(s):  
Water Soluble ◽  
Iridium Complex ◽  
Highly Sensitive ◽  
Sequential Recognition
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